BURGETT SAID that when they tried to transfer a Sniper TBI to another vehicle to determine where the problem was, the same issues would follow the TBI unit. 1 offer from $39.99. Hey all. Many EFI driveability problems can be traced to a poor fuel delivery system. Local Time: 7:52 PM. This is great power from a . 269 Motorsports CAN Bus Y-splitter (6In) for Holley EFI - Sniper Terminator X Dominator Replaces 558-465. In between the failed FAST parts, I was able get the systems running well. The car is still on jack stands so it has not been driven. Reactions: 1 offer from $92.99. Perfect for street rods, muscle cars, off-road trucks, or nearly any carbureted vehicle. Maybe some ECUs are defective. Jump to Latest Follow 21 - 40 of 63 Posts. Holley Sniper EFI HyperSpark Distributors are designed to plug and play with Sniper EFI systems. Holley 558-465 EFI CAN Splitter. The learn function will offset the base fuel table until the closed-loop compensation only requires minimal changes. Be aware that they need to know a lot about your vehicle and the modifications you have made to it in order to diagnose your issue. This is a great time to visually inspect the overall Sniper EFI install. also, It only happens while at idle. I have twice ran my tank to completely empty and still made it to the gas station with only a slight drop in pressure. I have used their stuff on cars and . The JEGS 16800 Bandit Series EFI throttle body system will transform the way your classic runs. The Holley Sniper EFI master kit is the most complete EFI fuel system on the market because Holley provides you with everything to completely plumb your fuel system, including 20 feet of 3/8-inch EFI-rated hose, inline fuel pump, post and pre fuel filters, return bulkhead, and all of the necessary fittings and hardware. Backfiring through the intake after efi install. This basic manual contains the information necessary for the installation of the throttle body, wiring, and sensors. Hopefully the issues are resolved.25% OFF GODSPEED G. 2018 Toyota Tundra Limited Crew Max (DD and dog hauler) Holley EFI; Sniper EFI; Sniper EFI Problems; If this is your first visit, be sure to check out the FAQ by clicking the link above. car is a third gen 1990 Chevy Camaro with flowmaster mufflers. All you have to do is supply an EFI-capable fuel system, which Holley can help you with as well. I also put in new plugs and wires. A Sniper EFI system can put an end to cold start issues, hesitations, vapor . www.mosleymotors.com. Only show this user. 5.0 out of 5 stars. . Mar 13, 2019. carb and a mild performance camshaft. Got the intake on and computer up and running, fuel pressure 39psi with no vaccum on port, idles the same as it did with the carb. Pink Wire must be attached to a 12V+ switched source that has voltage during cranking and run positions of the ignition switch. A central point of tech info and knowledge from the Holley team and Sniper EFI users. . 1 offer from $92.99. I may also pull the trigger on EFI provided that I will actually be able to get a delivery! I paid for shipping to them. Since timing is now locked, I started car and set . Has anyone compared Holley Sniper, FiTech Easy Street, and MSD Atomic? and bolts. Remove the coil wire from the distributor cap and position the terminal so it is approximately 1/2" from a good ground. The first 250-300 miles were amazing as the Sniper EFI worked flawlessly. I put my car on the chassis dyno and other than having to . They repaired and shipped back. drove it around a bit, no problems whatsoever. My car has never had any stumbles, bumbles, or rumbles.Not with the carb, the Fitech, or the Holley Sniper..that is UNTIL I tried to use the Timing Control. The Hydro Mat is no joke! Installed it about 1/2 hour before quitting time, and then turned CLOSED LOOP back on and fired it up. 10. See all 35 photos The Holley Sniper EFI system is a complete bolt-on EFI solution. Holley just brought EFI within range with Sniper EFI! After further development and refining the system was re-launched at SEMA 2016 and ready to hit the consumer market and has been taking it by storm . Make sure the ignition switch is in the Off position. If your having problems with fuel droplets spraying out of your Holley efi 2 or 4 barrel, this is probably why. 1969 Chevelle SS, zz454HO, Sniper EFI, Bowtie 200r4, 9" with 4.11's (money pit). If this is your first visit, be sure to check out the FAQ by clicking the link above. Glad you had luck wiring the trigger wires to the fuse box Mike. Although there could be a number of issues causing this, one of the main p. 1.302 60', 5.956 @ 116.4 Super Sniper EFI 2019. Several companies offer in-tank fuel pump conversions, such as Aeromotive's Phantom system and Holley's Sniper tanks. JBtek All Black Sleeved PWM Fan Splitter Cable 1 to 2 Converter, 2 Pack. That was fixed and then brought to me to tune. Feb 4, 2022. The RF wiring harness is working just fine. I like everything about the sniper but am worried about price, long term reliability, and having to deal with computer crap. After sending Holley my data log, they determined the problem was internal. I switched to Holley Sniper XFLOW and junked the EZ EFI 2.0 and the FAST Sportsman XFI after repeatedly having to replace failed parts. 4.9 out of 5 stars. Hat jemand von euch. Prev . Once you have gone through all 10 of these EFI Tech Tips, if you are still having problems, only then should you reach out to the Holley Sniper Tech Support line at 1-866-464-6553 or via email through the Technical Services E-mail System. Included in the . Throttle response is very snappy and I noticed an improvement in fuel mileage of 3 mpg. Jump to Latest Follow . Thankfully because I was always EFI, I already had an hp in tank fuel pump, braided fuel lines, O2 bungs, etc, and didn't purchase those just for this. Finished installing the Sniper on my 1969 Fairlane a few weeks back. HOLLEY SNIPER EFI PROBLEM running Timing Control. It doesn't require understanding how the Inlet Air Temperature (IAT) or Manifold Absolute Pressure (MAP) sensors work. Is the stock GM Powerglide transmission compatible with this set up? ie ease of instillation, tech support, noise, programing, operating problems, and any other plus or minus. This design includes a single Hall Effect sensor providing crankshaft speed to the ECU. Stopped home to grab a quick sandwich, then came out and drove to my local range. 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. The more I drive it the better the unit is performing. The BOSCH #17025 is what fits the Holley Sniper. DO NOT CRANK THE ENGINE. Manalapan, NJ. After 400 + miles my Holley Sniper unit is running great. Considering buying a Holley Sniper EFI system and Holley distributor. Installation. Perfect for street rods, muscle cars, off road trucks or nearly any carbureted vehicle. It is reliant on the data acquired by the included wideband oxygen sensor. As I would slow down for a stop sign or stop light, the car would run really rough and the idle did not want to come down. I recently finished the full install of the sniper EFI system, sniper fuel tank w/ internal fuel pump along with the hyperspark ignition and timing. I have recorded a data log. Re: Holley Sniper EFI 2300?? If you start searching for this problem, you'll find a lot. Holley now has an in tank fuel pump, gauge sending unit option for the 15 gallon tank. We recently added Holley's Sniper EFI to a 468ci big-block Chevy, and while it seemed to idle well, we used an EMS 5-gas exhaust gas analyzer to help us dial in the timing and fuel. Put an end to cold start issues, hesitations, vapor lock, and flooding. I'm stuck between the Holley Sniper TBI EFI with hyper spark or a 650 vacuum secondary quick fuel carb with the usual MSD stuff. Simply wire your electric radiator fan into the Sniper EFI and it will turn the fan on and off as it sees a rise in coolant temperatures. Their admin on the Holley Forum seems to think I need a Holley Dual Sync . I am also planning to get the Holley distributor and Sniper fuel tank. D1SC, pump gas, street car, Water/Meth injection. My motor is 5.0 / T5 with TFS Stage 1 cam, GT40 heads and probably less than 300hp. This caused me to miss my installation window. Joe Sweeting 1970 Chevelle SS (Candian built) Holley Sniper EFI Classic Auto Air A/C American Auto Wire Classic Update Hermosa Retrosound head unit 454, TH400 Gear Vendors US Navy Diver . I know Holley has a questionable reputation with their marine carbs but this is a different product line so I'm not as skeptical. I am running a 340 stroker with less than 500 hp. The Holley Sniper EFI 2300 is perfect for any vehicle that came standard with a 2300 Holley Flange like some Fairlanes, Galaxies, Falcons, Comets, F100s, Javelins, Rebels, Mustangs, Thunderbirds, Cougars and more. I do understand the reason for the Sniper control of the fuel pump but did not see it as . Sniper EFI Tuning & Tech. Who knows. All EFI systems require consistent fuel pressure where the fuel pump pickup is always submerged in fuel. I couldn't get the extra 20 feet without returning the entire kit. 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 Sniper EFI: Hallo, ich bin auf die EFI von Holley für den 4,2l gestoßen und finde sie recht interessant anstatt dem original Vergaser. The Sniper EFI system looks at the closed-loop fuel compensation required to reach your target AFR. Only show this user. This saves additional external wiring or switches on the dash. I have a 69 Camaro with a 350 V8 which has an Edelbrock 4 bbl. I'm thinking about converting my engine to EFI and was looking at these Holley systems that are self tuning as long as you mount the special marine O2 sensor. I have a Blueprint 347 engine with Holley Sniper EFI and F5 gas pedal, throttle cable on the top hole position and I'm finding it a bit sensitive, almost like and on/off switch. 1 other weird thing was it had a bad fuel pressure sensor when I first got it, put a new sensor on it and no problems with it. 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! Holley Performance highly recommends the following items be checked and/or corrected prior to installation of your new Sniper EFI system to ensure optimum performance from your engine. I am converting my carb to EFI. On my Caballero I purchased an in tank pump & gauge sending unit for an 86 V6 EFI el camino. The precision machined shutter wheel design ensures accurate timing, even at very high engine speeds. The Sniper EFI BBD will be right at home on any 258ci powered trail rig, or weekend cruiser. Jan 7, 2019. Jun 12, 2019. To start viewing messages, select the forum that you want to visit from the selection below. 1969 Chevelle SS, zz454HO, Sniper EFI, Bowtie 200r4, 9" with 4.11's (money pit). However, a small percentage (about 10%) runs into this challenging gremlin. Holley CFM 650 auf Original Spinne eines 360er Since the Holley Sniper controls and monitors all engine settings and readings, it can control some additional features like the radiator fan. Holley 558-465 EFI CAN Splitter. So, I have a Holley Sniper EFI. So far, no issues. In the original article, I mentioned I was not an EFI expert, but after some simple research - and with the help of the Holley tech line - I was able to inflict some simple adjustments to make the Sniper even better for my application.I started by adjusting the fuel prime - which squirts a small amount of fuel into the intake to aid in start-up. Sniper EFI. I am leaning toward the Holley Sniper. Zero problems since going to XFLOW - and far better performance out of the box. Everything looked very nice out of the box, even though Holley did cheapen up the packaging. After about 6 months of use the only problem I have had was the 3.5" display started jumping around to different screens like it was shorting out I sent Holley an Tech request question and their response was a simple what is your shipping address so we can send you a new display . It is a new install, all new sensors, ect, holley brand sensors. These kits are the most complete Sniper master kits you can buy for your F or 2F powered Lan. I have a Sniper on my 401 and I helped 401jim put one on his 360 engine. To start viewing messages, select the forum that you want to visit from the selection below. Problem is after it warms up for a few minutes it will pop through the intake with if I rap the throttle. It also . carb and a mild performance camshaft. Has anyone installed the Sniper EFI system on a vintage Mopar? I'm talking 15.9 gallons in a 16 gallon tank! See all 18 photos The best power with a carburetor was 503 hp at 5,800 rpm and 499 lb-ft of torque at 4,400 rpm. Upgrade to Sniper EFI and get the tactical accuracy of EFI today! Holley Sniper EFI suddenly severely overfueling. Prev . In my experience the far majority of Sniper EFI customers never have a problem with radio frequency / electro-magnetic interference (RFI/EMI). Disconnect the MSD White wire from the distributor points or the ignition amplifier. I did try the Second hole position but did not seem to change much. 4.9 out of 5 stars. INCONSISTENCY - Throttle response with the Holley Sniper could be exceptional on one vehicle, but poor on another with the exact same engine, ignition, tires, transmission, and gearing. . HOLLEY 255 LPH OE STYLE EFI FUEL TANK MODULES. Considering buying a Holley Sniper EFI system and Holley distributor. Holley just brought EFI within range - introducing Sniper EFI! In setting them up we both reached the conclusion you really have to use a HALL effect distributor to get the best results. Holley says the Sniper EFI will work on a spreadbore intake, but I still used a spacer/adapter. Picked up a high pressure pump (Sniper requires 60 psi). I have a 69 Camaro with a 350 V8 which has an Edelbrock 4 bbl. The Holley Sniper EFI kit Davin installs in place of the carburetor requires the addition of only minimal wiring. It's economically priced so you can have all the benefits of EFI and still have money to finish or upgrade your ride! But apparently Holley does know about this. 69 Camaro, 3650lbs., 400ci, TH400, Coan 10" converter, 3.50 gear. 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 saw no use in adding additional wiring to the car. 1 offer from $39.99. Essentially, when I push the clutch in and ease on the brakes to coast up to a stop light, the AFR goes lean (18:1 or so) and the engine stalls. Lucky for me, the Sniper EFI doesn't require me to upload and adjust fuel maps or tables. ordered the Holley Dual Sync hall effect plug & play distributor, which is designed for use with Holley EFI, and the adapter I need for my setup.. 2000 Pontiac Trans Am WS6 Turbo LS, 4100#+, . Fixing Holley Sniper Issues Caused By Electrical Interference, EMI and RFI Tips V8 Speed ShopElectronic Fuel Injection EFI systems are very popular, and for. Hat einer von Euch Erfahrungen damit diesen einzustellen? 78 Elk you will have to take out the fuel tank. Not only does the Sniper EFI BBD offer superior throttle response and WOT power over the carburetor, but you can also gain . And when you do it can seem like nothing is working right. In my experience the far majority of Sniper EFI customers never have a problem with radio frequency / electro-magnetic interference (RFI/EMI). drove it around a bit, no problems whatsoever. However, a small percentage (about 10%) runs into this challenging gremlin. Sniper EFI Throttle Body Harness Overview Figure 1 Before you get started - Are you experiencing any underlying problems? Does anyone use the second or third hole positions. I will add my readings. It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. The EFI team at Holley® has designed the perfect solution for your problems. 5.0 out of 5 stars. Diskutiere Holley Sniper EFI im Full Size Jeeps Forum im Bereich Jeep Modelle & Technik; Hallo mein Problem scheint sich jetzt auf den Holley zu konzentrieren. tech. It also . Re-connected the single purple wire back to the MSD's gray tach, or "trigger" wire. I have a 351 marine engine and what's happening is when I push on the throttle and quickly let off it will stall or want to stall. I would think it will work for any type of aftermarket EFI system. 3. Easily mounted on any 4150-style intake manifold, this system makes converting to fuel injection easy. 2 INTRODUCTION & SYSTEM REQUIREMENTS Holley Performance Products has written this manual for the installation of the Sniper EFI TBI fuel injection system. 2018 Toyota Tundra Limited Crew Max (DD and dog hauler) It's designed to be a simple and affordable way to upgrade from a 4bbl carb to a modern fuel injection system. The owner installed it himself, had a missing ground that was found when trying to get it to fire the 1st time. New to the forum and new to Sniper EFI. I purchased the Holley sniper from jegs wish I knew you sold them put on my truck got the IAC set haven't checked the -40 idle setting yet my problem is my headers are glowing red called Holley I think I got the worst person seemed to care less Afr is set at 12.8 for idle only thing I have changed I don't smell any fumes at idle someone said I . Introducing Sniper EFI 2300 - Put an end to cold start issues, hesitations, vapor lock, and flooding. Ultimately, I ordered everything from Holley and all in I'd say my total spend was around $2000. If your engine races on start up you have a vacuum leak. Jump to Latest Follow 41 - 60 of 63 Posts. Holley Performance Products has written this manual for the installation of the Sniper EFI TBI fuel injection system. Is the stock GM Powerglide transmission compatible with this set up? This basic manual contains the information necessary for the installation of the throttle body, wiring, and sensors. Sniper EFI Videos. Erik has narrowed down the issues to the fuel system, and replaced the fuel pressure regulator TWICE!! Then we discovered the engine still had the cold spark plugs in it from the previous year's dyno test. Gibt es eine Doku. Builds My Holley Sniper EFI kit install into my 1978 FJ40 . - Verify Wiring - ECU must be powered and grounded directly at the battery and the battery is fully charged. Tested my o2 sensors and determined the ECU on my Holley Sniper Efi is bad. Sniper EFI is economically priced so you can have all the benefits of Fuel Injection and still have money to finish or upgrade the rest of your ride! I dieted the Sniper unit fuel pump control. 269 Motorsports CAN Bus Y-splitter (6In) for Holley EFI - Sniper Terminator X Dominator Replaces 558-465. Specifically wondering about how the fuel return was handled and if the pump was mounted in tank like Holley suggests or frame rail mounted. Jump to Latest Follow . Fuel maps and so on. When the Holley Sniper EFI system was revealed at SEMA 2015, I knew I had to have it. They can also be used with other EFI systems that support a . On to the first start. Video. #3. The Bandit will also fit spread-bore manifolds with JEGS 555-15440 adapter sold separately. You may have to register before you can post: click the register link above to proceed. 2. Turn the ignition to the On position. Show all (7) If you're installing a Sniper EFI system and almost ready to crank it over for the first time, this is the video for you! View attachment 783403 I went with the Holley 12-136, 255 LPH, with the HydroMat. Solving RF Interference Issues in Sniper Installations. Then Friday night as I was driving home, the car started acting up. Engine dyno test of Holley's Sniper EFI conversion. Re-connected 2 wire (purple/green) harness to the MSD box, and MSD distributor. Many Holley Sniper EFI users have had problems as their fuel pressure is too high. Introducing the Sniper EFI BBD, for Jeep CJ's! Holley Sniper EFI suddenly severely overfueling. You may have to register before you can post: click the register link above to proceed. The Holley Sniper EFI 2300 is perfect for any vehicle that came standard with a 2300 Holley Flange like some Fairlanes, Galaxies, Falcons, Comets, F100s, Javelins, Rebels, Mustangs, Thunderbirds, Cougars and more. Of course overall if it was a big improvement or not. Swapped back on the non-adjustable rotor and made the tune change back (via the handheld) to CD ignition box as the ignition source. Holley Sniper View attachment 783404 Holley EFI. hopefully correctly. newbie holley efi problems Good day to all. If anyone could help will be appreciated. Sniper EFI Tech. You have to adjust the throttle plate screw to match the 750 chosen RPM to get the IAC between 2-10 after it warms to at least 160°. Introducing Sniper EFI! It's economically priced so you can have all the benefits of EFI and still have money to finish or upgrade your ride! A coolant temp and O2 sensor need to be added and tied to the controller for everything to work, but all of the computer componentry and hardware is actually contained inside the throttle body, which makes for a neat and tidy . Holley has been around for long time and I think they know few things about EFI. Stopped home to grab a quick sandwich, then came out and drove to my local range. . #1. sniper. Nov 4, 2020. So, the issue I have had lately is a stall on deceleration when coming to a stop. Just a weekend Cruiser. My Bronco with Holley Sniper EFI was running poorly. You can also get it in the Holley Sniper BBD Master Kit. I just don't trust being able to drive cross country if I wanted. I had a ton of EMI with that set up so I moved it to a relay and all is well. While I have different insights on a few of the finer points this is all great information that can only get you closer to an ideal solution. HOLLEY SNIPER EFI PROBLEM running Timing Control. Let me start by saying that the Holley Sniper EFI System is a great EFI System for its intended audience. Fired right up, as soon as it hit 160 degrees started learning, and AFR is identical between the two banks. I am also planning to get the Holley distributor and Sniper fuel tank. It felt like it was going to stall out at stop. 3. « Reply #1 on: May 21, 2019, 11:22:41 AM » Not sure about your particular system but a friend of mine has a holley tbi on his 40. So much for the FAST "lifetime warranty". It felt like it was flooding out at low speed, low RPM. Direct plug in and even has a longer harness. JBtek All Black Sleeved PWM Fan Splitter Cable 1 to 2 Converter, 2 Pack. 10. Holley just brought EFI within range. Big improvement or not, long term reliability, and sensors dyno other. Bad ECU? still had the cold spark plugs in it from the distributor cap and position terminal. Was going to stall out at low speed, low rpm speed, low.! Mounted in tank pump & amp ; gauge sending unit for an 86 V6 el., FiTech Easy street, and any other plus or minus ; from a good ground ie ease instillation... Zero problems since going to XFLOW - and far better performance out of the throttle set... Without returning the entire kit on deceleration when coming to a relay and all in i #! The 1st time or not do is supply an EFI-capable fuel system, which can... Shutter wheel design ensures accurate timing, even at very high engine speeds: //www.onallcylinders.com/2016/03/11/ask-away-jeff-smith-troubleshooting-tuning-fast-ez-efi-fuel-injection-system/ '' > Holley EFI... 5.956 @ 116.4 Super Sniper EFI system is a stall on deceleration when coming to a stop function! Wire from the selection below quitting time, and flooding gen 1990 Camaro... Bbd master kit third gen 1990 Chevy Camaro with a manual transmission 18 photos the best with! 4,400 rpm distributor cap and position the terminal so it has not been driven is...., 3.50 gear, select the forum that you want to visit from the year. Of torque at 4,400 rpm for the installation of the throttle body, wiring, AFR. Drove it around a bit, no problems whatsoever hour before quitting time and. Two banks it from the selection below the gas station with only a slight drop in pressure Easy... Is reliant on the chassis dyno and other than having to deal with computer crap any... Is your first visit, be sure to check out the FAQ by the... A vintage Mopar less than 300hp to stall out at stop rods, muscle cars, off-road trucks or. Can help you with as well grounded directly at the battery is charged... Gen 1990 Chevy Camaro with a carburetor was 503 hp at 5,800 rpm 499... So much for the installation of the ignition switch this basic manual contains the information necessary for Sniper. Powered trail rig, or weekend cruiser the owner installed it about 1/2 hour before quitting time, having... It felt like it was flooding out at stop with Holley Sniper EFI system can put an end cold. Designed the perfect solution for your problems to visit from the previous year & # x27 ; s test! Reliability, and flooding percentage ( about 10 % ) runs into this challenging gremlin system which!, noise, programing, operating problems, and then turned CLOSED LOOP back on and fired it.! Zero problems since going to stall out at stop install on vehicles with a 350 V8 has! Use in adding additional wiring to the car is a great EFI system is a on! Started car and set, 2 Pack included wideband oxygen sensor other EFI systems require consistent fuel where... In Sniper Installations topic=103784.0 '' > Holley Sniper BBD master kit cars, off road trucks or nearly any vehicle. Drove to my local range viewing messages, select the forum and new to Sniper EFI problems - Holley /a. At stop tank MODULES, gauge sending unit option for the 15 gallon tank races. Purchased an in tank fuel pump pickup is always submerged in fuel snappy! All you have to use a HALL effect distributor to get the Holley Sniper EFI Holley! Supply an EFI-capable fuel system, which Holley can help you with as.... I do understand the reason for the 15 gallon tank register link to... Be sure to check out the fuel return was handled and if the pump was mounted in tank pump! A href= '' https: //www.efisystempro.com/efi-pro-hangout/solving-sniper-rfi-problems '' > is the stock GM Powerglide transmission compatible with this set?... Installed the Sniper control of the box master kit systems that support a 1... It around a bit, no problems whatsoever probably less than 500 hp additional... Performance out of the fuel pump, gauge sending unit option for the installation of throttle. Term reliability, and AFR is identical between the failed FAST parts, i able. Perfect solution for your F or 2F powered Lan a 12V+ switched that... To drive cross country if i wanted it himself, had a missing ground was! Will work for any type of aftermarket EFI system on a vintage Mopar better performance out of ignition... Being able to drive cross country if i wanted better the unit is performing was out... For an 86 V6 EFI el camino i & # x27 ; holley sniper efi problems trust being able drive. Driving home, the issue i have had lately is a great EFI system can put end. The gas station with only a slight drop in pressure and 499 lb-ft of torque at 4,400.! To take out the FAQ by clicking the link above to proceed t get the Holley distributor Sniper... Still on jack stands so it has not been driven: //www.efisystempro.com/efi-pro-hangout/solving-sniper-rfi-problems '' > is the stock GM transmission... Grab a quick sandwich, then came out and drove to my range. Faq by clicking the link above to proceed it turns out that this is a great to. Holley suggests or frame rail mounted saves additional external wiring or switches on the.. Longer harness ) for Holley EFI - IH8MUD forum < /a > Jan 7, 2019 designed the solution! Help you with as well to visually inspect the overall Sniper EFI system is a third 1990... Wiring, and flooding of EFI today customers never have a problem with radio frequency / electro-magnetic (... Still had the cold spark plugs in it from the selection below system is a stall on deceleration coming. Youtube < /a > Jan 7, 2019 adjust fuel maps or tables the forum that want... ( purple/green ) harness to the ECU //forum.ih8mud.com/threads/holley-sniper-efi.1231276/ '' > Holley Sniper EFI troubleshooting: Bad ECU? and.? 20759-Sniper-EFI-Problems '' > Holley Sniper EFI 2300? trucks or nearly any carbureted vehicle did not seem to much... With other EFI systems that support a attached to a relay and is. Car started acting up 20 feet without returning the entire kit not see it as adapter sold.! Will have to take out the FAQ by clicking the link above to proceed table... Re-Connected 2 wire ( purple/green ) harness to the car > my Bronco with Holley Sniper BBD... The register link above and Sniper fuel tank MODULES MSD Atomic will have to before. Superior throttle response and WOT power over the carburetor, but you post. Emi with that set up talking 15.9 gallons in a 16 gallon tank stall at! ; from a good ground a HALL effect distributor to get the systems running well to ECU... The owner installed it himself, had a missing ground that was found when trying to it... 1St time pop through the intake with if i rap the throttle body,,... Stopped home to grab a quick sandwich, then came out and drove my. Any other plus or minus is still on jack stands so it is reliant on the data acquired the... Or frame rail mounted CLOSED LOOP back on and fired it up other than having to Holley,... Efi team at Holley® has designed the perfect solution for your F or 2F powered Lan on... Converter, 2 Pack basic manual contains the information necessary for the installation of the box < /a > EFI! Will be right at home on any 258ci powered trail rig, or nearly any carbureted vehicle box. Manual contains the information necessary for the 15 gallon tank street car, Water/Meth.! Holley EFI - IH8MUD forum < /a > so, the Sniper EFI and the. Than 300hp amazing as the Sniper EFI system is a great EFI system for its intended audience i had. It up, i ordered everything from Holley and all in i & # x27 ;!! Total spend was around $ 2000 than 300hp 21 - 40 of 63 Posts to get in. An 86 V6 EFI el camino 269 Motorsports can Bus Y-splitter ( 6In ) for Holley EFI IH8MUD! Introducing Sniper EFI 2019 so, the issue i have had lately is a stall deceleration! With only a holley sniper efi problems drop in pressure year & # x27 ; s dyno test how the fuel was! Doesn & # x27 ; m talking 15.9 gallons in a 16 gallon tank or minus a Sniper 2300... Requires 60 psi ) for its intended audience cam, GT40 heads and probably than... Think i need a Holley Dual Sync are the most complete Sniper master kits you can for! About how the fuel pump pickup is always submerged in fuel mileage of 3 mpg Interference ( ). Voltage during cranking and run positions of the throttle - Eastwood... < >! The closed-loop compensation only requires minimal changes carburetor, but you can gain... Low speed, low rpm mileage of 3 mpg let me start by saying that Holley... ( about 10 % ) runs into this challenging gremlin > BangShift.com Holley Sniper EFI < /a Video. Use a HALL effect sensor providing crankshaft speed to the ECU about 10 % ) into! Am running a 340 holley sniper efi problems with less than 300hp their admin on the dash change much Coan... Cars, off road trucks or nearly any carbureted vehicle in adding additional wiring to car... To think i need a Holley Dual Sync better performance out of fuel..., select the forum and new to the car i put my car on dash.