Holley sniper efi running rough

holley sniper efi running rough 030 over, headers, aluminum Holley intake, RV cam. I would turn up the idle screw on the primaries to get the car to keep running, for a start. I also installed a MSD Streetfire CDI box. Runs with stock Jeep distributor. View and Download Holley Sniper EFI 550-510 quick start manual online. Looking forward to starting to install everything Saturday. Whether you're looking to maintain, optimize, or upgrade, we offer competitive pricing on Holley Sniper Efi Bbd For Jeep CJ - 550-858 for your Truck or Jeep at 4 Wheel Parts. We're trying to tune it and set the idle. See full list on efisystempro. In full disclosure this happens to be on a 460 in a 2WD '77 F250. But it came attached to the engine I swapped in a number of years ago. Holley Sniper EFI has arrived and it's here to change the traditional ways of thinking about electronic fuel injection. Is it more carb than needed on this engine, yes. 425 HP/475 Tq that runs in a '73 K5 Blazer. I prefer to adjust the valves with the engine running. The Holley 550-511K Sniper EFI 4150 4-Barrel Self-Tuning Master Kit is a perfect match for any muscle car, classic truck, street rod, or nearly any other carbureted vehicle. So not controlled by the EFI and was running great till now. Sniper EFI 550-510 automobile parts pdf manual download. 0L engine onto the new 4. I have a late efi D9 motor that I am planning to rebuild I have a nice pair Of C9 Heads, a complete Comp Cams extreme Energy performance valve train kit weiand stealth intake with If budget allows a Holley sniper efi system. 1968 Camaro, 383 with Dart Pro 1 aluminum heads and roller cam, Holley Sniper EFI with Dual Sync distributor, Tremec TKO600 5-speed transmission, 3. Not dogging Holleys, I love them. Depending on your application, this is also the time to install your throttle bracket and transmission kickdown brackets provided with your Sniper EFI Kit. Picked up a high pressure pump (Sniper requires 60 psi). The Blazer starts in seconds and no more raw fuel burning the eyes. I've often used the 2-stage versions and then run a leaner main jet for a leaner cruise. Feb 26, 2017 · Hi ya, so did a search looking for info on the Holley sniper EFI kit. Will come with distributor and wiring for it plus. Then re-start and run engine. The power valve checks good but replaced it anyway with one that matched. So if something goes wrong it’s on the user/installer. 54's, Factory Air, Tach, Clock, red with Levis blue seats and top(s), 31x10. I imagine earlier GM TBIs and Toyota EFI systems were much less than the 25% deviation. Holley Sniper EFI on Amazon Holley just brought EFI within range - introducing Sniper EFI! It’s economically priced so you can have all the benefits of EFI and still have money to finish or upgrade the rest of your ride! Perfect for street rods, muscle cars, off road trucks or nearly any carbureted vehicle. The CTS/temp is above 160. Although, the Holley Sniper apparently has a progressive linkage option in the setup/startup menu 🤷🏻‍♂️. Ended up with the carb. 0 on my 96 Roadmaster wagon with a pretty healthy 455, I absolutely hate it , it will show 15. 55 Rear End, IRS, 17” . cycles of start-ups and shut downs, the engine begins to run rough, and  7 May 2018 How to install a Holley Sniper TBI fuel-injection system on a big-block Chevy engine, and the benefits that go along with using EFI. I had more trouble with the EFI system but despite over a year of programming, timing, replacing O2 sensors at $120 each, etc, I was still left on the side of the road more times than I care to count. . 00 with your Holley Sniper EFI System purchased from EFI System Pro. Try them 2 1/4- 2 1/2 turns out from fully seated and go from there. We get a backfire through the carb if you open the throttle quickly. Sniper EFI products are part of the Holley Performance family and offer economically priced self-tuning fuel injection systems. This caused me to miss my installation window. 42 jets). 78 Malibu, 402, th350, holley sniper EFI, 9" 3:70. Mar 29, 2004 · We're working on a 350 SBC, we just finished putting a Holley street dominator manifold, lunati cam, and Holley 4160 750 CFM carb. 5 PSI; Built-in Single stage progressive nitrous control Quote Reply Topic: Holley Sniper Timing Control Posted: Jul/12/2020 at 5:54pm I've just installed a Hyperspark distributor in my 360 powered Gremlin drag car to give the Sniper EFI the ability to do timing control. It takes tuning time to dial a Holley in. Summit Racing carries Sniper EFI throttle body kits as well as Sniper EFI fabricated intake manifolds designed to maximize your vehicle’s power while going easy on your budget. 0L engines are very susceptible to an idle instability when an open-element air filter is attached to the end of the mass Just curious if anyone is running the Holley Sniper efi? I have a 302 put together by Mike Forte with the Powerinjection 3 set up and the Edelbrock RPM intake. I have barely 300 to 400 miles on it. Built 440 Chrysler engine with Edelbrock aluminum cylinder heads. Simply choose between Black and Dark Gray and designate your T-shirt size in the dropdown when adding the Sniper system to your shopping cart. Holley Sniper Install. Really hoping to actually have everything done Saturday. Engine started knocking so I have to replace other parts at the moment. 0 A/F ratio. It's the holley that is running rich. That's Holley Dominator EFI. 1 for the component names. With an aggressive hydraulic roller camshaft and aluminum heads, you get a street/strip powerhouse that isn't for the faint of heart. But unfortunately I came up with nothing. Mine ran really badly without it. Auxiliaries will be a straight swap from your stock 4. Once I swapped my MSD for the Holley disti, it made all the difference in the world. I had no idea this EFI unit would make this much of a difference. Not only does the Sniper EFI BBD offer superior throttle response and WOT power over the carburetor, but you can also gain timing control! Put an end to cold start issues, hesitations, vapor lock, and flooding. From what I hear, it is easy. s. Runs rough if there is a vacuum leak but still runs cares less about exhaust leaks (little backfire maybe) and still goes. Hi guys, new build and new holley 750hp full mechanical. A central point of tech info and knowledge from the Holley team and Sniper EFI users. A typical Holley 750 double-pumper 4150-style carburetor is generally fitted with an idle-feed restrictor of 0. Just make sure to get the Holley distributor to go with it. Just swapping parts around is a guaranteed disaster. Jun 07, 2017 · Hey all. Economically priced to save your hard earned money for other parts of your build; Holley Sniper EFI is a self-tuning, plug and play fuel injection system that takes all the trouble and guesswork out of your switch to modern electronic fuel injection. Ease in the throttle and 2900-3000rpm it cuts out pops and bangs like a big misfire. Is anyone familiar with this application on our cars I have the Holley Sniper and it took like 3 months of battling RF/EFI interference, but FINALLY it is running fantastic!!! I and running a MSD6AL ignition box and MSD Blaster coil with a Holley dual sync Dizzy. I didn't have it timing control at first either. 50 in Throttle Opening: 4. Follow along as we show you how easy it is to configure and install the Sniper Hyper Spark Ignition system. shouldnt take more than 2 full turns Jul 31, 2015 · Holley Hi-Ram EFI Retail Price: $724 Construction: Cast aluminum Part Number: 300-123 Runner Length: 6. 2. fuel injectors capable of supporting up to 650 hp on forced induction or dry Sep 11, 2020 · Put an end to mysterious air/fuel ratios, jet changes, and cold-start rough idle troubles with Holley Sniper EFI. Vacuum leaks really affected performance so check all of them. com/brands/holley_efi/ Jan 01, 1970 · Something as simple as weather, temperature, and elevation changes can dictate how much fuel an engine needs. May 19, 2017 · OK, so about back 2 weeks ago, I took the car for a drive and it started running rough. Therefore, every time you drive, the Sniper will keep learning to get closer to your target Air/Fuel Ratio. As such, it has been good on 500-inch engines but seems to show best when used on 540s and up. Now, Holley EFI products power these cars and are dominating the performance world. Just needs to be jetted down. I'm still a rookie as far as EFI tuning/tweaking. The Sniper EFI BBD will be right at home on any 258ci powered trail rig, or weekend cruiser. Along with easy of installation and wiring, the new clear cap installation tool makes indexing your distributor a breeze. Jan 12, 2016 · It IS a rich condition that burns the eyes. This is the main EFI Harness that connects to all of the necessary factory sensors and related EFI sensors to run a Holley system. Sep 26, 2019 · Robbmc. No issues ran just fine. 0 with Holley Sniper EFI - Houston, Texas. Jun 12, 2014 · Holley’s new Sniper EFI fuel pump conversion makes a great upgrade for classic Chevelles, Corvettes, Novas, Camaros, and even trucks. Also for: Sniper efi 550-511, Sniper efi 550-516. the carb is running really rich, even though I have the smallest jets I could find (carburetor mikes, . 32" BFG KO2 A/Ts. Upgrade to Sniper EFI and get the tactical accuracy of EFI today! Holley has been the undisputed leader in fuel systems for over 100 years. - Verify Wiring - ECU must be powered and grounded directly at the battery and the battery is fully charged. 8/5. The best power with a carburetor was 503 hp at 5,800 rpm and 499 lb-ft of torque at 4,400 rpm. Order this Holley Electronic Fuel Injection Dominator Engine Control Unit from CJ Pony Parts. 0 truck engines with 24x crank reluctor and carbureted intake manifold; No laptop required; 3. The throttle-body system flows up to 800cfm and supports naturally aspirated engines making up to 650 hp. Was hoping How to Set IAC Correctly Holley Sniper EFI The whole trick here is to put a strong piece of tape over the IAC hole so no air can be sucked in by the IAC, or idle air control valve. I have had a Holley Sniper installed for most of this year. Last weekend I took my Charger to a 1/4 mile at nearby airstrip. looked at the sniper, FITech, and a custom TBI unit (have that in a box in the garage). Then Friday night as I was driving home, the car started acting up. New to the forum and new to Sniper EFI. Dec 12, 2017 · FiTech EFI systems use a Manifold Absolute Pressure (MAP) sensor to read vacuum of the engine, and with this information, we can calculate the load of the engine. Holley is having enough trouble with their MSD distributors and timing control with Sniper. We opted for the Holley 440 distributor for the tuning advantages. This is done on  27 Feb 2019 not sure what EFI is supposed to sound like, but this isn't running right yet. 50x15 Destination MT's, Edelbrock Performer intake, Holley Sniper EFI, MSD6, MSD ProBillet distributor, OME shocks, one-inch shackle lift, Reese tow bar, G2 Find FAST EZ-EFI Marine Base Kit Fuel Injection Systems 30365-06KIT and get Free Shipping on Orders Over $99 at Summit Racing! FAST EZ-EFI marine base kit fuel injection systems upgrade the rough idle and poor cold starting often associated with engines running a carburetor, while improving overall performance and drivability. Ran the old road thru Cocos at the 50th Baja 1000 when we were cutting across to head to San Felipe after Aug 02, 2017 · (1) Remove the fuel line at the carburetor and plug. I have quadruple checked my  Here are 10 great Sniper EFI System installation tips from Holley's Tom Kise. FREE Sniper EFI T-shirt with every Sniper EFI system purchased from EFI System Pro! This T-shirt is yours for $0. I need the blazer running ASAP as I am swapping the motor on my Tahoe (my current DD) and need to use the Blazer while that is getting done. Then, they've upgraded the injectors from 100 PPH to 120PPH. You can use the master kit and mount the pump on the frame rail, but even Holley suggests an in-tank pump. you want to get them adjsuted to put out maximum vacuum at a given idle rpm or to maintain the highest rpm once warmed up . Holley carburetors have powered every NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Just wondered if you've ever run across a system not powering up? I. This puts peak naturally-aspirated HP right at 800. 8 Sep 2018 Holley sniper has been on the car for approxly 50 miles. I have installed a HEI distributor, Holley Sniper BBD fuel injection on the jeep. The 460 architecture is pretty much an oversized small Jun 25, 2014 · GreekStallion started following Holley Sniper EFI June 2, 2018. https://www. 2 inline 6. Fig. 13 in Throttle-Body Size Tested: Holley 105mm Fuel Rail: Holley Holley's Avenger EFI system isn't unlike those first throttle body injection (TBI) systems of the 1980s. The idle air control valve is a valve that adjusts air to create idle stability. holley. 2) Choose Open Global Folder. 09 Nissan Titan tow vehicle 94 camaro stick shift toy. 3/6. As I mentioned before the WOT AFR setting is at 12. They feature four 100 lbs. Crawling under load at idle should be no issue with the Sniper. As I would slow down for a stop sign or stop light, the car would run really rough and Top 10 Sniper EFI Installation Tips from Holley's Tom Kise Posted by Chris Myer 08/11/17 31 Comment(s) Holley Sniper EFI Instruction , Holley Technical Training Manager Tom Kise recently published a list of ten "suggestions" for Sniper EFI System installation and I offer them here essentially unedited. I get out of it and the get back in it  3. com/gp/product/B00UXD871S/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B00UXD871S&linkId=bd Dec 15, 2017 · The best solution for an EFI fuel pump is an "in-tank" pump. With the C9 Heads having 75cc combustion chambers I am after some In this video I cover the basics of the Terminator X software. I was thinking of getting a holley efi conversion kit. 0, Holley Terminator X EFI. 8. EFI sniper installed and dialed in perfectly as per directions, starts, stops, idles at 750-ish drives great. Now, Holley EFI is dominating the performance world as well as our products for GM's Holley Sniper EFI is a perfect match for any muscle car, classic truck, street rod, or nearly any other carbureted vehicle. 9 air/ fuel ratio and be loading up so bad your eyes water, And hardly ever starts without 30 seconds of cranking, backfiring, cranking. Holley® has been the undisputed leader in fuel systems for over 100 years. -Jeff Our 500 HP 347 Ford Small Block Stroker is the highest horsepower offered in Hot Rod Series crate engine series. Jul 25, 2017 · The owner chose to upgrade the fuel system with a Holley Sniper EFI Self-Tuning Kit. Actually it was the Holley HP EFI. Yeah, that's you. Upgrade to Sniper EFI and get the tactical 66 Mustang 331 Stroker DSS Forged FX pistons, Eagle I beam Rods, Eagle Cast Crank, Lunati Vodoo Cam, Trick Flow TFS170s, Weiland Stealth, Holley Sniper EFI, 4r70w swap, US shift controller, Classic Auto Air, Eibach Front springs Youtube- Cturboaddict Jan 31, 2019 · That’s right, the addition of a Holley Sniper EFI HyperSpark distributor is just the ticket to add timing control to your system. Read More Adjusting the acceleration enrichment settings on my Holley Sniper EFI on my 1990 Third gen Chevy Camaro with Flowmaster exhaust. Jan 20, 2019 · To start off, I replaced a Holley 4bbl carb mounted on an Offenhauser intake. amazon. And when you do it can seem like nothing is working right. Will need your own ignition coil that you can pick up at your local parts store. Sep 05, 2009 · I've got a holley red pump and regulator, set to 5 1/2 psi. Whether you're looking to maintain, optimize, or upgrade, we offer competitive pricing on Holley Performance Sniper EFI Self Tuning Master Kit - 550-511K for your Truck or Jeep at 4 Wheel Parts. New Holley Terminator X Plug & Play EFI for Ford Engines  7 May 2018 The car starts and idles but when RPM's come up it starts backfiring and Ford 302, Holley Terminator EFI, T5z, 3. Oct 18, 2016 · #1 - 1977 CJ-7 Renegade (Daisy Jane), Levis trim, 304 V8, TH400, QuadraTrac w/Low Range, D30, Trac-Lok AMC20, 3. After a cold start and it warms past 160°, it runs great. To be sent to tech support May 19, 2017 · 1) Launch the Holley EFI software from the icon on your desktop. Hi all, Build: 408w, large cam, Holley Super Sniper, Hyperspark Distributor, MSD digital 6al (pn 6425), dual fuel pumps (58psi), battery located in trunk. 5* reference angle, clear cap used to phase rotor while engine was at 0* top dead center While waiting for the AFI kit I just said F it, and went with the Holey Sniper efi kit. This kit converts any Buick 225 V6 Jeep to ECM controlled throttle body fuel injection. » Read More Installing Strut Rods on 1963-’82 Corvettes Sep 26, 2012 · FAST states that the single EZ-EFI will support up to 650 horsepower, and the dual quad EZ-EFI will support up to 1200+ horsepower. 3. 2. Controlling boost, injecting water-methanol, and running multiple stages of progressive nitrous--all without add-on controllers. 0 that I used to get the Jag running running -- whereas I could simply have gotten a 302ci and "sniped" it. 19 May 2017 To tweak one of the base tunes follow Holley's section 3. 6L stroker. Then went through and made sure all header and Sniper flange bolts were tight. Put an end to mysterious air/fuel ratios, jet changes, and cold-start rough idle troubles with Holley Sniper EFI. I do not race it, but I've run it in the sand dunes and the back roads of Baja. 14 Jun 2014 Re: Holley Terminator EFI. 5 Bar MAP sensor included which safely works on applications up to 21. Holley Sniper EFI owners and Tech에 멤버 12,714명이 있습니다. Wiring doesn't get any easier. ET was 12. While I was getting better acquainted with the display, the new paint Dec 29, 2018 · All this to say Holley actually does NOT recommend this modification haha. 0 into my 1956 Jag XK140 (started 2 years ago)! It is a glorious pain in the ass installing all the darned components from the 1995 Mustang 5. Figure 1. We just got done installing the Holley Sniper EFI system in our 69 Coronet convertible. this is a well-known Holley issue since the introduction of the 4150's. And I felt it was easier to get the 4bbl Sniper than to swap back to a stock intake. No power at the programmer and no fuel pump running. looks like it was just a 1968 Camaro, 383 with Dart Pro 1 aluminum heads and roller cam, Holley Sniper EFI with Dual Sync distributor, Tremec TKO600 5-speed transmission, 3. With our selection of quality brands and expert advice, we help boost your vehicle's performance and make a statement on or off the road. /hr. My car runs great with the 1:1 linkage. With the self-tuning abilities of the Holley Sniper EFI, installation is as simple as removing your 4 barrel carburetor, installing the EFI, running fuel lines, answering a few simple setup questions on the handheld tuner, starting the truck and letting the EFI tune itself as you drive. Still Happy with my engine. Sep 21, 2019 · I have the Holley Sniper on a built SBC 350. Quite nice figures for a car with 4300 pounds, or what. First off, I had idle problems and still do sometimes. 5 Thread love the EFI install! Running rough but running. Sep 20, 2020 · Put an end to mysterious air/fuel ratios, jet changes, and cold-start rough idle troubles with Holley Sniper EFI. /lbs. Holley sniper EFI with pump gas and as expected we ran out of fuel injector but it made 961tq 1152hp and still climbing at 6500rpm 09/20/2019 Part 1 of this 541ci pump gas Keith black hemi we built for a customer Consider the problem solved by Holley's new Sniper XFlow EFI System. Right now you are only running 1/2 a EFI system. Upgrade to Sniper EFI and get the tactical Jan 21, 2020 · The team at JWT planned for a prototype intake camshaft, but it required larger custom valve buckets to prevent the camshaft from running off the edge of the bucket. If the engine is at 180 on a cool day it fires right up after Apr 15, 2011 · When it;s smooth and response is clean, you have the right size. fuel level is below the sight plug on the float, adjustment screws are about as lean as you can go on the carb the idle is about 850, if i mash the gas it shoots a fireball out the carb, there's some preignition when i shut the car off, and it's definitely running rich Holley Sniper 550-511K EFI 4150 4-Barrel Self-Tuning Master Kit (more details) Put an end to mysterious air/fuel ratios, jet changes, and cold-start rough idle troubles with Holley Sniper EFI. Here's the other and "main" issue, I was told by Holley service that due to the "wild" cam in my engine the Sniper system probably wouldn't run in a "closed loop", meaning the system wouldn't actually go into learning mode on the "stock/mild" cam setting, I would have to use the "street/strip" setting which caused the rich mixture to begin with Feb 12, 2020 · Our pick for the best overall aftermarket EFI system is the New Holley Sniper 550511 EFI Kit because it provides a great deal of functionality. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. 0 EFI to his big-block Camaro and while it runs great, it has definitely lost much of its old rumpy cam idle characteristics. 454 s and top speed 112. I have looked into the Holley forums and downloaded the EFI software but do I need the USB to clear  Find helpful customer reviews and review ratings for Holley 550510K Sniper Efi run into problems and adds another cost as well as headache to the system. It pulls vacuum between 6-8 [email protected], but runs great. Finished installing the Sniper on my 1969 Fairlane a few weeks back. Just watched the video. 74 F. Step 1: Remove the throttle body mounting bolt from the left rear corner of the throttle body. Started the car let it warm up and reset the IAC or tried to get it as  21 Feb 2019 My Bronco with Holley Sniper EFI was running poorly. Holley Sniper EFI Master Kits include everything you will need to get your new Sniper EFI throttle body setup and running on any of your vehicles, Throttle body mounted ECU - no extra computers to mount or relocate, Self tuning ECU means you dont have to be a computer/tuning expert to enjoy EFI, Capable of supporting up to 650 HP, Precision machined shutter wheel designed for improved accuracy Oct 08, 2020 · Holley Sniper EFI Master Kits include everything you will need to get your new Sniper EFI throttle body setup and running on any of your vehicles. I actually took it to get dyno tuned and it was running like a champ. Mar 11, 2016 · I have the ez efi 2. It will rough in the base table in as little as 10 miles. When i drove it home from my mechanic in stop and go traffic, the RPM's went low and it died on me. Pinto with Holley sniper throttle body efi Hi, thought I would make a contribution after looking on for a couple of years. Advanced boost control is available via free Sniper EFI tuning software, including Boost vs RPM and Boost vs Time – Same popular boost control offered in Holley HP and Dominator EFI systems! 2. We decided to run a dedicated ground wire from the electric fuel pump all the way forward  19 Sep 2018 Sure there were some problems early on as owners and the performance The Holley Sniper EFI system is a complete bolt-on EFI solution. It is a drop on replacement for an existing aftermarket Edelbrock carb. In my searching, I have not seen anyone using the Sniper EFI system on the L28. Have had numerous articles saying keep the dual plane intake and just as many opinions saying to run a single plane intake. They will result in drivability issues, including idle control problems, and could  So driving down the road car runs great. Twisted Wedge, FTI cam, Ported Victor 5. I initially programmed the ECU with the "Mild" cam, but starting was difficult. Starts up great, (when cold) but when it's hot outside and the engine is around 195 I have a problem restarting it. It also fas a tad bit of hesitation off idle. Ford's Central Fuel Injection (CFI) was based on the same principle of injectors in a It "cleans" up and pulls through the bog up to redline. The Holley Sniper EFI was a fairy easy install following the included instructions and online videos. But the details will be the same as a Bronco. Followed the instructions and did a couple of primes to fill the lines and such. This will often flush dirt past the carburetor float needle and seat. The kit contains all necessary sensors, wiring harness, ECM and electric fuel pump (no fuel lines). If car doesn't completely die, it would run super rough, trying to stall, then would PING BADLY, like a car It was time to up grade my 72 Chevy Blazer after stalling out climbing hills when off roading. Crank and run the engine until the fuel bowl runs dry. Still do not understand why they haven't released the software download and Once you setup the Sniper to control timing it will be right. Turn off the engine and connect the fuel line. Sniper has ability to generate data logs you can email them to look at. It felt like it was going to stall out at stopli Holley's EFI Hyper Spark Ignition system is a plug and play system for Sniper EFI. Lookjam; Jul 19, 2018; Classic Mustangs For Sale; Replies 2 Jun 09, 2017 · Car ran great prior to SNIPER install with 750 holley single pump single feed SAME radiator but since have upgraded to dual 11″ fans 4400 cfm up from twin 10″ at 3500 cfm. Affordable aftermarket fuel injection is here and it couldn't be any easier to install on your vehicle. The systems that do support it must be nearly 20 years old now. My guess is they are too far out. I had my idle dialed in and then I changed m Jul 14, 2019 · Rough idling after replacing the heads could be due to setting valve lash too tight, which would keep valves from seating and mimic a vacuum leak. In the end I had a carb. Somebody that builds race engines. I have the Sniper now installed and I'm having problems. This is a great time to visually inspect the overall Sniper EFI install. Used the tanks-inc So today was a very good day as I was able to get the Pertronix to fire the Sniper EFI and provide timing control! Yes that's right boys and girls, she runs with both fuel and timing control now! Well, ok it runs but I'll admit I need to fine tune the phasing of the trigger better as it is a little rough but that should be easy with a timing light. Apr 28, 2017 · OK, let me start with I know very little about the EFI units. About 2 hours in and better than halfway there. Once you know, you Newegg! Hi ya, so did a search looking for info on the Holley sniper EFI kit. I have replaced oil pan, rear main seal and valve cover gaskets in an attempt to stop the oil leaks but the rear main leak has gotten the best of my patience. I've been dealing with this hunting issue with the terminator for years so I'm getting pretty good at fixing it. Really impressed with the system so far. Once dialed in it runs like a dream. Position the Lokar I recently became the owner of a 1982 CJ8 with a 4. Acceleration, light or heavy, is good from idle to as far as you want to go, no problems here at any RPM. 15. I made a big difference on my setup. 5. Jun 03, 2016 · 1/17/18 Update: I've been running the Holley Sniper EFI on this engine, had some issues, if you buy this engine and you go TBI EFI then make sure you go SINGLE plane intake, I was running an airgap dual plane and having some minor issues, I changed this last week to a single plane and its like a new car. (2) If dirt is in the fuel system, clean the system and replace filter(s) as necessary. Driving single or even dual drive-by-wire throttle bodies. Wouldn't shift into 3rd. The Sniper throttle body will fit single and dual four-barrel square flange manifolds—the four read what d hearne said . Needless to say, life got in the way and I haven't messed with the car until tonight. On to the first start. Normally, 10% ethanol shouldn't cause rough running. Make sure you spec the cam for EFI so you have the correct vacuum pulse through the EFI / fuel delivery to run correctly. Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. 29 Jun 2019 Holley Sniper EFI experience wanted I've been running the Sniper on my 427W for about a year now and love it. I'll change the plugs today and hopefully it does something. The dual quad EZ-EFI Add-On kit includes a spare throttle body with four fuel injectors, four add-on harnesses, a dual linkage kit and a fuel line crossover hose with fittings. Holley Sniper + Hyperspark Problem I put a holley sniper on my 302 a couple of months back and recently added the hyperspark ignition system which included the coil, the distributor and the ignition. Pressure spot on at 58-60 p. I’ve been running the Sniper EFI since last year, and I love it. Hey guys. Pink Wire must be attached to a 12V+ switched source that has voltage during cranking and run positions of the ignition switch. 3 for the new motor I am swapping in. They are very helpful and knowledgeable. However, I would also try running in the idle mixture screws. Sniper System EnhancementsSniper EFI Progressive Linkage Kit (Fixed or Adjustable--Improves Streetability) Popular! Sniper CAN Bus to USB Adapter (Connect your laptop computer to Mar 21, 2019 · Holley Sniper EFI owners and Tech has 12,422 members. If geared low, it should be downright badass. Economically priced to save your hard earned money for I installed the #3606 system on my F250 390. Jul 28, 2017 · and bolts. gl/4wuLB2 Holley is introducing Sniper EFI - It’s economically priced so you can have The reason Holley doesn't just add Sniper to the description is that they don't want to support Sniper with TFI. I wanted to go with an in-tank fuel pump, so got one for an EFI car and did some modifying to it for the return line. I'm looking for any info anyone has on the installation on a Jeep 4. Master Kits include 20 feet of 3/8" EFI fuel hose, in-line electric fuel pump, pre and post filters, return bulkhead, and all of the needed fuel fittings and hardware to get your system plumbed Its over on Yellowbulletsupercharged section. I'm unsure of the lift and duration. Refer to Fig. Took it to a guy with lots of older car experience and he says it needs a whole carburetor rebuild and it would make more sense to replace it. Any suggestions? Thanks is advance. Also purchased an hei distributor with integrated coil. It felt like it was going to stall out at  7 Feb 2020 This video shows you how to set the initial startup idle or if you want to reset your Holley Sniper EFI and reset the idle as well. 6 Aug 2018 Holley's Sniper line of self-learning throttle-body EFI systems has been a which can be invaluable in solving various other tuning problems. Ran a bit rough, but soon HOLLEY SNIPER EFI PROBLEM running Timing Control. Holley recommends 60 if I remember Apr 04, 2018 · Holley Sniper EFI. I know they're others, like the Howell, which a lot of people seem to like especially if you need it to be emissions compliant. After the backfire it still runs great except for idle when it sound like a vacuum leak. Boost & Nitrous Ready Oct 19, 2020 · I’m running a hydraulic roller custom grind from comp in my 505 pump gas street motor only with trick flow 240 heads, using factory power brakes. It felt like it was flooding out at low speed, low RPM. It’s . Short version: I have a 1965 Malibu SS 327 running super rough. Sniper EFI Throttle Body Harness Overview. This distributor is designed specifically for the 258ci Jeep application and you’ll not only get a reliable unit, you’ll get a powerful unit. The carb may run rich, lean, or rough, but it rarely fails outright once running. The Dominator EFI Unit will eliminate the need for additional controllers as they are all contained in this one unit for premium tuning and fuel strategy. I'm running the Sniper system for the last couple of months. Simply put it is reliable, will get you home every time. Page 1 of 3 1 2 3 Next > Mar 16, 2018 #1. Upgrade to Sniper EFI and get the tactical Buy Holley Black Sniper EFI Fuel Injection System Complete Master Kit with fast shipping and top-rated customer service. I struggled with the idea of EFI in mine. Having up to 79 advanced inputs and outputs at your control. I know they're others, like the Howell, which a lot of people seem to like especially if you need it to Sep 11, 2020 · Put an end to mysterious air/fuel ratios, jet changes, and cold-start rough idle troubles with Holley Sniper EFI. Jan 17, 2017 · Engine dyno test of Holley’s Sniper EFI conversion. Since the camshaft dictates so much of the running characteristics of an engine, camshaft consideration when choosing EFI is equally important. For a budget-friendly option, you should consider Here is why I went Holley Sniper EFI: 1. Holley Sniper 550-510 - Holley Sniper EFI Self-Tuning Fuel Injection Systems Fuel Injection System, Holley Sniper EFI, Self-Tuning, Tuning Kit, Polished Throttle Body, Kit Part Number: SNE-550-510 Find Holley Sniper EFI 650 HP Super Sniper Fuel Injection Systems 550-519 and get Free Shipping on Orders Over $99 at Summit Racing! Looking to convert your blow-through carbureted turbo engine to EFI? Look no further than the Holley Sniper EFI 650 HP Super Sniper fuel injection systems. Holley Tech support is open 8-5 M-F and till 1pm on Sat. Oct 27, 2017 · Holley’s new Sniper EFI master kit for C2 and C3 Corvettes is a specific fuel system economically priced so you can have all the benefits of EFI and still have money to finish or upgrade the Started the install of the Holley Sniper yesterday evening. Never had an issue that was heat related or bouncing around related. Jan 20, 2017 · Since then Holley has continued to refine their systems—efforts that led up to the Sniper EFI. Sent a new one, which was a 5 minute install. Hit the key and it started right up. This was the Holley system designed to run an LS, but the Sniper uses the same wide-band O2 and computing system. We had to shave approximately 1/4" deep off the May 01, 2015 · Ask Away: How Electronic Fuel Injection (EFI) Affects Cam Idle (Hint: You May Not Like It) Posted by Jeff Smith on May 1, 2015 at 10:00 am A friend of mine just added an EZ-EFI 2. 2, “Creating an Initial has a seemingly endless array of adjustments, the objective here is to get the vehicle running. Called Holley and they suspected a stuck regulator. Holley carburetors feature idle mixture screws which control the air/fuel ratio and these are usually the main culprits in an improperly idling carb. They are jetted rich from the factory. It's the 2300 2 barrel self learning kit. 7 Mar 2016 Self-learning EFI systems will perform well as long as the system is Edelbrock's E-Street, FiTECH, Holley's Terminator, Quick Fuel's QFI, and others. Hydraulic lifters work best with between 1/4 to 1 turn down from zero lash at the rocker arm. 5. We learned a few things during the install. I really liked the idea of the self learning, and after watching tons of videos I was convinced. Holley sniper 650 unit. it starts to run a little rough. Condition is Used. Ron Rhodes Moves from Carbs to Holley EFI, Resets X275 Small-block Nitrous Record Author: Bradley Iger | 11/05/2020 Although he was initially hesitant to make the leap to EFI, Rhodes has never been faster – and in X275 racing, neither has anyone else. the screws on the side of the metering blocks are the idle adjustment screws which only effect the idle mixture . com/ : https://goo. Simply hook them up, answer the basic Wizard setup questions on the 460 Efi Guys Then went through and made sure all header and Sniper flange bolts were tight. Aside from the aforementioned avoidance of VVEL, the nice part of sticking with the VQ35HR head is it features a Direct-Action Mechanical Bucket (DAMB) design and no rocker arm system. 402, th350, holley sniper EFI, 9" 3:70. This quick walk-through will get your Holley carb up and running with a perfect idle in no time. The Lokar Throttle Cable Bracket and Stainless Springs kit is designed to be used with a Lokar Throttle Cable and a Lokar Kickdown Cable (if applicable). Fuel and Air Systems. THe Holley Sniper is controlling my timing and now that it's finally working, I'm loving it Aug 19, 2011 · Holley Sniper EFI w/Offenhauser C Intake. The first 250-300 miles were amazing as the Sniper EFI worked flawlessly. The shop that installed it has it running perfectly. HOLLEY 255 LPH OE STYLE EFI FUEL TANK MODULES. Are you tired of rebuilding the 50+ year old Rochester Quadrajet Carburetor on your 1968-1981 Corvette or for that matter; any other classic Chevrolet, GMC, Buick, Oldsmobile, or Pontiac? Sep 20, 2020 · Holley Sniper EFI- Used. 73 12-bolt Eaton posi differential. As for the cold start issue.  First, there are clearance issues with the Edelbrock aluminum cylinder heads. Checked fuel pressure and it pegged the 100psi fuel pressure gauge. com My Bronco with Holley Sniper EFI was running poorly. May 23, 2017 · Ok I checked the timing and it's good. 0L fuel injected Jeep from 1991-2006, you can simply purchase one of our complete Jeep crate engines. 1968-1981 Holley Sniper EFI Quadrajet Spread Bore Throttle Body Upgrade. touchscreen included; 4 venturi quantity Product Fit : Direct Fit Series : Terminator Multi-Point EFI Series Injection Style : Throttle body Throttle Body Mounting Flange : 4-barrel square bore Throttle Body Material : Billet Aluminum Throttle Oct 01, 2020 · Holley Sniper EFI 4150 4-Barrel Self-Tuning Master Kit. Before you get started – Are you experiencing any underlying problems? Holley Performance highly  1 Nov 2018 This is for my Buick guys running the Terminator EFI or the Sniper EFI. I'm doing some research. I installed a Holley Sniper EFI 2-11-19 on my K5 Blazer with a SBC 360 newly rebuilt mild cam still running an HEI distributor. I went thru the same thing when I first installed my 1250 Super Sniper. Product Overview. And I’m getting 5 mpg less than when I was running my 1000 Holley with 88 jets square. Firechicken, are you running full length headers or shorty headers? I am trying to figure out where to place the O-2  7 Mar 2020 Tried to fire up the car and it won't stay running unless i hold the gas. My Sniper runs 58-62 psi. Rough idle of course, you know. Greetings all, I've had my 1977 280Z for 4 years and now the fun begins. 5 in. System learns quickly, and runs like a champ. I know the two things that will slow me down are going to be the fuel supply and return and the timing control part. The best-running EFI cars breathe cold air from a ram-air kit. See all 18 photos. Apr 14, 2016 · https://www. that means they are adjusted properly, then adjust the idle speed to speed or slow it down. It's a mildly built engine, 9:1 compression, . Holley Sniper EFI is a perfect match for any muscle car, classic truck, street rod, or nearly any other carbureted vehicle. I couldn't get the extra 20 feet without returning the entire kit. It currently has the Holley intake and carb conversion and I want to upgrade to EFI. It’s been all smiles driving the Blazer now. Notes : GM LS1/LS6 engines and 1999-2007 4. 08-29-10 09:48 AM - Post# 1968378 In response to Dale_Holley You answered your own question: You stated that with the EFI is idled fine at the 750-800 rpm & 14. + Headers, EFI holley sniper kite 373 Gears Comp cam 3 inch coker tires Rebuilt 700R trans with new springs,new clutches Everything new inside race Gears Shift kite Stall 4 Led head lights Power windows Power doors Tilt steering wheel Drop kite 5 rear 3 front Ac that Blows Rewired all wires under the hood Very Clean If you have a 4. Install the hold down nuts and snug down progressively in a “criss-cross” pattern (60-80 in. Looking into the plenum of the Holley EFI intake shows considerable design differences between it and intakes for carbureted use. No more long hours of scrapping together OEM parts, learning how to tune on a laptop, or working through hundreds of hours of wiring diagrams just to hear your engine spit and sputter in the garage. Note! This harness will work with both the Holley 4-BBL or the Factory throttle body (both cable-driven and drive-by-wire) and will completely supercede the 558-107 when all of that stock is sold. Per a previous thread, I think it could be the needle/seat, but I'm not competent enough to dig that far into it. You should have the Sniper Control timing eventually. Hes using it with a Procharger. 4) Double-click on the “496 650HP” (or other applicable engine) Global Folder. ). not sure what EFI is supposed to sound like, but this isn't running right yet. I am running a clifford intake with a 625 AFB and a 1 1/2" dual Dec 01, 2019 · Had some idling issues -- just mainly rough idle. created problems, I would have to dig for it, but I think its on the Holley Forum. 1) Launch the Holley EFI software from the icon on your desktop. I live at about 5800 feet, and almost everywhere we go to offroad is higher. I purchased the full kit with fuel sub kit. I reran the setup just to make sure something hadn't got messed in the tune/Learning process. 541” with 113 LSA, auto transmission, 3:55 axle. New GM throttle body adapts directly to 2 or 4 barrel intake manifold, replacing your carburetor. 25 mph. I offer this troublesh Apr 30, 2018 · 1 Sniper Stealth 4500 (550-841 Shiny, 550-842 Black, & 550-843 Gold) Holley Sniper EFI FUEL INJECTION INSTALLATION MANUAL The recently installed Holley Sniper EFI is not reading the O2 sensor. Even playing with the AFR ratios didn't help Mar 31, 2015 · Holley’s Chevy big-block intake is a dedicated EFI design, rather than an adaptation of a carbureted intake. In my experience the far majority of Sniper EFI customers never have a problem with radio frequency / electro-magnetic interference (RFI/EMI). You may already have an EFI compatible fuel pump in your tank, with a bypass regulator which would allow it to work with low pressure that a carb needs. Settings: Hyperspark ignition setting, 57. I discuss how to add and remove ICFs (individual configuration files) and also go over the var Here are some great accessories and upgrades to your Sniper EFI System, as well as Holley replacement parts. i. Holley support would much rather have you use their expensive dual-sync The Holley Sniper master kit looked good and was packaged well but only came with 20 feet of EFI hose vs the advertised 40 feet. Holley Carburetors & Fuel Pumps at https://www. carid. All you’ll need is a screwdriver and a good vacuum gauge. Practically brand new! Has about 100 miles on it. Mustang 5. 3) Double-click on the Custom Calibrations (Cals) folder. So my assumption is that the Sniper is adjusting/learning the fueling requirements. is running. I need the intake manifold from the Tahoe's 5. However, a small percentage (about 10%) runs into this challenging gremlin. That should cure any doubters of whether or not it'll support 1200hp or not. Mixalis reacted to a post in a topic: Au falcon running rough September 17, 2016. I have just installed a Holley sniper 2300 efi throttle body to my pinto stock down draught manifold. If ONLY I had known about the Holley Sniper when I put a 5. Just got my holley sniper efi kit in yesterday. First, Holley has punched out the 4150 throttle body to flow a much more filling 900 CFM of air flow. Holley Sniper EFI Planning and Installation and it was running rough. Made it near school and it was running rough. e. holley sniper efi running rough

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