Holley Sniper Efi Troubleshooting - Holley Performance Products Forums">Warm Starting Issue.

(Holley EFI Typical Idle And/Or Running Problems) May God's grace bless you in the Lord Jesus Christ. Should you experience any problems or need parts assistance that this quickstart manual or the complete installation manual does not address, please feel free to contact our technical it is mandatory to use an external fuel pressure regulator and cap the Sniper EFI regulator port off. I had the pleasure of troubleshooting a QuadraJet Sniper. Ultimately, I ordered everything from Holley and all in I'd say my total spend was around $2000. When the Sniper 2 EFI system broke cover last summer, it was an evolution of Holley's popular throttle body electronic fuel injection conversion kits—offering plenty of refinement and enhancements over the previous Sniper 1. operations much be performed within the Holley EFI software. New Sniper & HyperSpark Install Troubles. I do have an aggressive cam installed and idle set to 800 RPM, any lower an it will sometimes die when issue starts. HyperSpark Ignition for Sniper EFI. I just finished my Sniper EFI install yesterday on my 1964 Impala with stock 327. Several companies offer in-tank fuel pump conversions, such as Aeromotive’s Phantom system and Holley’s Sniper tanks. With a completely new Individual Configuration File (ICF) for drag racing transmission control, as well as a revised nitrous ICF, this update promises to be the best software yet!. 8 MPG US) on a pretty quick 200 mile road trip. If either of those two are not making contact, the 3. 700R-4 ProBuilt, Moser 12-bolt with 3. I’ve been seeing a lot of people saying you should have a spacer if your intake has the divider. does it have a cam position sensor? If modern EFI doesnt detect a CPS or crank position signal it will kill the fuel pump. Find out the best fixes according to the manufacturer, from …. MSD Troubleshooting Techniques. Line appears to be in good shape with no rust. About six months ago, I started having intermittent misfire issues. Sniper fuel pressure drops and AFR spikes to 35. Sniper won't start on new build. Datalog is a short drive around the block with some varying throttle. This is the original 1979 350ci small-block. Here we go: The car & engine: Dodge Challenger 1970, 440 Magnum, 550-511K Sniper, Edelbrock Torker II intake (single-plane), MSD 6AL, Comp Cams camshaft 21-225-4 (Street/Strip, 11. Holley carburetors operate at a range of 5. Here are some tips from Holley's EFI program engineer Doug Flynn on how to get the proper ground and voltage connections for your EFI system. A datalog will just verify a problem with the fuel pressure, injector duty cycle. In early November I was having a problem starting my car with the Sniper. Page 1 • 2 Injector Sniper EFI (550-849 Shiny, 550-850 Black, & 550-851 Gold) • 4 Injector 2300 Super Sniper EFI (550-852 Shiny, 550-853 Black, & 550-854 Gold) ; Page 2 Failure of any one component does not constitute, nor does it justify, warranty of the complete system. Camtech CT21544 (234/238@050", 570/579lift, 2600-6200rpm quoted range, 110lobes) 1. craigslist sw mn 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! Subscribe now to make sure you don'. Before installing an EFI system, you need to make sure your engine is in good overall condition and in proper tune. The problem I'm having is when the vehicle is being charged by the alternator OR a battery charger, it'll run for 15-30 seconds then start to run poorly and shutdown. It is only intended to get a vehicle running with one of the base calibrations provided. I hope you'll at least have a Merry Christmas. Changed out stall to a 2500 rpm stall. Our current headache is the throttle is very, very touchy from 0 to getting moving. It does run very good at the time of this writing. From a complete failure to start to tha. The most common cause of this problem is a blown fuse on the large red wire leading to the battery or an improper connection at the battery. If that's OK, contact Holley Tech Service ( ). The BOSCH #17025 is what fits the Holley Sniper. On occasion, the lights of your IBM Wheelwriter may not come on or character misprints could occur. hsi delphi forums My Sniper will run great for a few days and then all of the sudden the AFR jumps to 32-35. If it won't run at a fast idle then you either have a spark problem or a fuel problem. The screen opens comparing the Sniper to the laptop, but never finishes comparing. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. 5 speed ZF5 manual transmission with 3. Sniper EFI Idle Setting/Throttle Blade Setting (Holley Sniper EFI Quick Start Manual): Once the engine is up to operating temperature, the idle speed can be set to what was configured in the Wizard. If it still is not zero, loosen, turn full CW and try again. Both are very common problems with Sniper installs. I was out last weekend, cruising at about 45 MPH when it backfired, quit running and wouldn't start again. A 750 double pumper Holley carburetor is a high performance carburetor that incorporates two accelerator pumps that are manually operated. If I swap injectors the problem does not move along with the injector. I did a startup datalog and for the first couple of seconds the AFR is 12. There are different ways to plumb the fuel system. : Pink, red, small blue and large blue. Let the engine run until it dies and then stop the datalog. I have a '68 GTO, Pontiac 461 Stroker engine that was recently build and dynoed by Kauffman Racing. Hey guys, new to the form I just installed my first Holley EFI unit 550-510 with the HyperSpark ignition system controlling timing. 2) Verify fuel pressure at the Sniper with a pressure gauge. My Holley Sniper EFI has been having an issue with a corrupt SD card and in this episode I walk you through how I fixed the problem by . Holley's Sniper EFI BBD kit was designed for use on 1971-1986 Jeep CJ's with this engine combo, and although you probably won't see these numbers from your trusty inline 6, a pair of 100 pound per hour injectors, make Sniper EFI BBD more than capable of supporting up to 350 hp naturally aspirated. 65 volts with the TPS set at idle. As I'm sure most people here know, EFI plus no RPM equals no start. I searched and couldn't find any vacuum leak. Spending much time on the Holley Performance forum and have read installation instructions, …. Categories/ Air & Fuel Delivery. GPatrick recommend doing since my 11-22-21 file was setup for. I run a 160° thermostat and I'm curious at what temp people are turning their fans on & off. Had Holley offered the 1V Sniper 2 months ago, I probably would have went ahead with my 200 to 250 swap. hearth and hand mixing bowls The RPM range is common but the MAP scale difference is not unheard of but unusual. The Sniper Stealth 4500 EFI system is modeled after the Gen III Dominator carburetor and uses the same mounting points for the air cleaner flange. If this is your first visit, but slight EMI/RFI detected by the radio won't necessarily translate to EMI/RFI problems with the Sniper. Also attached photos of the display when it stalls (says No Data). Many EFI driveability problems can be traced to a poor fuel delivery system. When selecting the correct Sniper EFI system for your engine, there are a maximum of three questions we must answer: 1. Additionally, no changes can be made until the system is confirmed to have a stable tune at idle. Switched from a dual plane air gap to a Holley single plane intake with my Holley sniper efi. Troubleshooting - engine starts and stalls. Someone will analyze/troubleshoot the problem & offer advice. I made the decision to go EFI with my 55 project, sent my new stainless gas tank back to Rock Valley to modify for in tank pump, return line, etc. Do I still need the holley 12-753 30 amp relay We have not heard of any problems with the Sniper and the Pertronix Ignitor 2. 2018 international practice exam frq Three part numbers cover a complete range of applications - all Sniper EFI systems, Sniper 2 EFI specific (M8 CAN connection), or a full standalone unit. Learn how to troubleshoot common issues such as sensor verification, no start conditions, display software, and more. Seems silly of Holley not to fix something so simple. This is just for troubleshooting to get it running and is not suggested to be your final timing. This is not your problem right now, but will cause issues when you are cruising. Dec 23, 2016 · 415 posts · Joined 2016. A local ap store should have a sensor. After a year of issues, I added the HyperSpark system as well. I confirmed this with a Holley tech when I called the other day. Worst issues I have had with Holley Snipers were the O2 Sensors would just randomly crap out. Holley EFI; Sniper EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. Problems with very sensitive throttle. The easiest thing to do would be to loosen the TPS, turn it as far CCW as you can, tighten, and test. *The hatch on the boat has a forward facing scoop over throttle body to force air down over it. You will find a lot of good information here; Forum: Sniper EFI Holley supports this forum and many users have …. 7) Sniper EFI Idle Setting/Throttle Blade Setting (Holley Sniper EFI Quick Start Manual): Once the engine is up to operating temperature, the idle speed can be set to what was configured in the Wizard. Installed it about 1/2 hour before quitting time, and then turned CLOSED LOOP back on and fired it up Fired right up, as soon as it hit 160 degrees started learning, and AFR is identical between the two banks. Here's a description of the testing that I've. I'm going to help someone load Build 50 and wanted to make sure I wasn't going to get him in trouble. My first start it started and ran really rough for 5. I’ve had my Holley Sniper 870 for two years. NEVER wire them directly to the fans! The AC Disable value is a TPS value above which a 12 volt output is sent out to deactivate the air conditioning compressor at wide open throttle. Sniper 2 Transmission Control Kit. We kept some of the tried and true features from the original Sniper, like our Self Tuning capability and the easy to use calibration wizard, while improving on virtually everything else. Holley Sniper EFI HyperSpark Distributors are designed to plug and play with Sniper EFI systems. What I have: 454 Chevy Square Body. I have no problem with cold start. If you have 40psi liquid pressure at the pump but the pressure of the fuel boiling is 20psi of fuel vapors then when the injector opens the vapors vent out fast and your left with momentary drop of 20psi which can stall the engine and make restarts hard. The Sniper EFI calibrates the TPS sensor at every key-on event. I've been running the Sniper Master Kit 550-511K on a ZZ502 for about 2 years now. Have yet to get a good running condition with my Sniper setup. When installing a Holley Sniper EFI system, it’s essential to ensure that the wiring harness is properly connected and functioning correctly. Universal Wire Set Installation Instructions. The Sniper EFI was installed ~18 months ago, then about 6 months ago I swapped out an old MSD Pro Billet distributor & 6AL box (Causing misses, backfires, etc. SD Card Files for Sniper 2 EFI. (Holley Sniper EFI Troubleshooting Guide). It took roughly a year to iron out all of the issues. Searching For ECU can mean the red wire is not getting power from the battery. Two months ago I installed a Sniper EFI on a stock 1968 Ford 302. The HyperSpark is plugged into the green and purple connector and has clean ignition …. I'm having a really hard time with my Sniper & HyperSpark setup. Inspect/troubleshoot/service the fuel system (fuel pump, cavitation, plumbing, voltage, filters, pickup tube, tank venting, etc. Holley Sniper Air Fuel Ratio Issues & Start Up Issues Symptoms & Fix. I HEI Distributor + LiveWire wires. Any plug wire near the Sniper is capable of generating enough EMI/RFI to cause problems. And when running these grounds, don’t skimp on wire. Pressure testing Sniper fuel lines. Dry Nitrous Fuel Enrichment Tuning. Some people said my issue was caused by a stock PCV and a fixed orifice PCV would be better for the Sniper system. 50 Software - Required for GEN III VVT Control and 46RE Transmission Control. I should be back with an update in a month or two. best organ postludes 1976 Dodge Warlock - 360, Sniper 1972 Plymouth 'Cuda - 5. If the throttle linkage doesn't return to zero due to binding or weak return. Got everything installed in my Camaro, Sniper EFI, HyperSpark ignition system and Aeromotive tank and pump. Topics: 5,527 Posts: 52,529 Last Post: Full lean at WOT, and after driving for 20 minutes. There are a total of 3 vacuum ports on the front of the throttle body, one in the rear that can be used with supplied brake booster. Davidson analyst Michael Baker yesterday. The Power Distribution Module (PDM) is a cost-effective and optional accessory that isolates the core of your EFI and ignition wiring into one, easy to use location. Hello, looking for some help with my Sniper EFI 4150 4BBL (PN: 550-511) BBC 454 street/strip cam, 11:1 compression. Recently replaced thermostat and coolant temp sensor. Holley offers Sniper 2 EFI kits that include a complete fuel system, eliminating the hassle of selecting individual fuel system components. I'm in the process of installing the Sniper system in a 1987 Firebird 305 engine. When the engine is turning over, fuel squirts up into. I’m running a return style system that almost perfectly mimics the factory fueling system in a stock 80. Terminator X V2; Terminator X V2 Production Software (V2 Build 50) Terminator X V2. Featuring Sniper 1 specific master kits, Sniper 2 ignition kits, Ready-To-Run Distributors and standard Distributors. Machine shop thinks it's the Holley Sniper causing the issues, so here I am. Intermittent high idle - Sniper EFI. Hi folks, new to the forum so sorry if repeating something already beat to death, LOL. The default crank timing is 15°. After updating the EFI software or ECU firmware, I always enter every EFI software screen to verify everything is still correct. The kit is composed of a modular fuel pump hangar assembly, a fuel pump that can properly feed a fuel injected engine, and a Holley HydraMat fuel pickup system. 1994 Chevy 1500 Step Side, Vortec 383 Stroker, Holley Sniper EFI, HyperSpark Distributor, HyperSpark coil and CDI. Feb 25, 2024 · Sniper Stealth 4150 tip-in issues. Verify by cycling the key off/on. The Sniper would then dump fuel to combat the lean condition. I increased mine by 10 for all values from 80-260 degrees. After this key cycle the Sniper EFI ECU will have the calibration created by the Wizard loaded into it, and ready to start. Mar 27, 2023 · Help, Sniper Troubles. I'm running the sniper EFI with HyperSpark on a crate Chevy 502 engine. I read in this forum that there seems to be a problem with the Sniper in that sense. This weekend I upgraded the ignition system from the HEI to the HyperSpark Distributor, CDI box, & Coil. For more information you can fill out a Technical Request form, download instruction sheets and manuals, or visit our Tech Support Library for videos and FAQ's. carburetor tuning and adjustments. Also, the Holley Sniper EFI will intermittently inhibit Closed Loop at idle, if the AE vs TPS/MAP RoC Blanking values are set too low. TOOLS REQUIRED FOR INSTALLATION. The LED status is indicated under “LED”. Perfect for street rods, hot rods, muscle cars, off-roaders and just about any carbureted vehicle, Sniper EFI will put an end to cold start issues, hesitations, vapor lock and flooding. Shut off the engine, ensure power to the Sniper is switched off. Also, ensure the Switched +12V pink wire (Sniper EFI) remains powered in the "Run" and "Crank" key Do some searches on EMI/RFI problems and solutions. Sniper EFI - V1 SD Card Contents. Having a strange issue with the preinstalled fuel pump relay in the Sniper harness. In todays video we finally get the Holley Sniper EFI Issues Sorted For good on my 1976 Big block Square body 3+3 Dually known as "The Spaghetti Hauler"! (Hop. 0 Build 110) is included in the software installation. Closed Loop & Learn are on, CL Comp & Learn are low numbers, engine has a lot of vacuum, idle seems smooth at a low RPM. They are engineered using Holley fuel pumps, regulators and filters coupled with quality Earl's plumbing to provide a fuel system tailored to the needs of your EFI System. How To Load A Global File, Step By Step. Shop Troubleshooting - engine idles rough, stall. I have an original style coil, so I used the Non-Timing. And 10 micron filter between the pump and throttle body. fuel inlet must go to the inlet fitting on the BBD Sniper EFI. Turn on the ignition, start a datalog, and attempt to start the engine. FYI: Sniper EFI Replacement Sensors - Auto Parts Store CTS Sensor: Standard Motor Products TX3 TPS Sensor: Standard Motor Products TH191 IAC Motor: Standard Motor Products AC416. He's a Holley EFI parts professional, Holley EFI Dealer & fuel pump/fuel system specialist. After this initial setup, the car was parked in the garage with the battery disconnected until today. kelley blue book snowmobile 4 Wire Vehicle Connection (Battery +, Battery -, Switched Ignition & RPM) Integrated Fuel Pressure Regulator. After installing the engine, Sniper, HyperSpark, and wiring, in the car. If this is your first visit, be sure to check out the FAQ by clicking the link above. Sniper 2 EFI - a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. I did not expect the problems that I have experienced so far on my Sniper 4150 4 injector unit. 9 0 258 017 025 (17025) Wideband O2 Sensor: Unit of Sale: Each: Write a review. How To Install The Holley Dual Sync Distributor with Sniper EFI. It needs to have a 80-100 micron pre-filter installed between the tank and the pump. 3 Build 50 EFI software (the latest version). Thanks for your help in troubleshooting my Sniper troubles. (Holley Sniper EFI Loose Fuel Injector Connector Fix) May God's grace bless you in the Lord Jesus Christ. Jul 15, 2022 · Again, this may be a faulty Base Fuel Table or lack of pressure or a bad injector. My wiring harness has all signal wires separate from all power wires, and are ran on the …. Any permanent deformation on the plastic surface will cause it to be non-responsive. Before you get started – Are you experiencing any underlying problems? Holley Performance highly recommends the following items be checked and/or corrected prior to installation of your. 1) Always Connect Directly To The Battery: The best place to connect the main power and ground for the ECU is the vehicle’s battery. Sniper EFI Replacement Sensors - Auto Parts Store CTS Sensor: Standard Motor Products TX3 TPS Sensor: Standard Motor Products TH191 IAC Motor: Standard Motor Products AC416 WBO2 Sensor: Bosch 17025, 0258017025 (LINK/LINK/LINK/LINK) (The Sniper EFI 2 bar MAP sensor is internal with the ECU. Feb 17, 2018 · The Sniper EFI calibrates the TPS sensor at every key-on event. 3) Need to add carb spacer, make the stock air cleaner sit 2” too high, and just did not look right. Most tuning parameters and software functions can be found by selecting an icon from the toolbar. Every Sniper EFI System is tested for. All four injectors should provide equal amounts of fuel. Turn the ignition to the On position. Currently I have low-speed come on at 180°F then turn off at 170°F, high speed comes on at 185°F and turns off at 175°F. Holley EFI fuel kits are the perfect addition to your Sniper EFI or Holley EFI kit. When I take the boat on the water roughly 5-10 minutes (once took. 6) Problem always occurs when reducing RPM after throttle input. If it is 35 or so, the WBO2 sensor has failed. Check the throttle body wiring (main harness). Jan 26, 2023 · Sniper EFI Erratic AFR. If you've owned a Town & Country for any l. Sniper QuadraJet issues with 307 Olds. I have already written twice without receiving an answer. 86" Holley EFI Pro Dash products. I sent it in to Holley for repair, which took forever, so they finally ended up giving me a whole new unit. Holley 543-111 TPS or Standard Motor Products TH191 TPS. Check for a small dent (s) on the plastic surface on the handheld. Then it shows the white wire coming from the Sniper harness to the white wire on the CD box. john deere x724 problems With a timing light you should see 15° as step 1 of distributor synchronization. Holley Sniper BBD 2-barrel fuel injection systems offer not only exceptional throttle response and outstanding power gains over a carburetor, but you can also gain timing management. I have an MSD Pro Billet distributor and an analog MSD 6AL CDI box. ECU firmware from version SNIPER_01010160 to SNIPER_01010260 the problems remain unresolved. “Holley designed the Hyperspark ignition to complement the Sniper EFI. 5) Car consistently idles correctly after a key cycle. Jan 19, 2020 · The problem is that after setting up the HyperSpark with the Sniper EFI I don't get any spark. Atomic 2 EFI Handheld Contents. 5" TSLCD on the same firmware version, Wizard run and checked for the usual suspects and it all checks fine. The US Supreme Court today heard arguments about juvenile justice and uniquely harsh American punishments. Troubleshooting engine run-on can be challenging to say the least. Holley EFI; Range Technology HyperSpark Ignition for Sniper EFI. (Holley Sniper EFI Troubleshooting Guide) May God's grace bless you in the Lord Jesus Christ. Sniper 2: The Leading EFI Made Better in 14 Ways. Install the throttle linkage to the Sniper EFI throttle body. Sniper EFI software was designed to make navigation simple and easy. I'm guessing it"s because what's going on in the world today. The Sniper EFI calibrates the TPS sensor. Contains latest handheld contents for the MSD Atomic 2 EFI Throttle Body System. Instagram: @projectgattago Offering remote Holley EFI tuning. benz 350 for sale I also put in new plugs and wires. Unlike the former, Holley Sniper EFI will make you spend over $1000 for that combo. Discover expert tips for troubleshooting well water issues, including low pressure and discoloration. Although there could be a number of issues causing this, one of the main p. Avoid using any 90 degree fittings between the tank and pump. I'm currently utilizing two springs, and not just one as seen in the pictures. Learn how to troubleshoot common issues such as sensor verification, no …. That allows the system to support …. 2) Your throttle linkage may be holding the throttle open on the Sniper. The secret to Earl's Vapor Guard hose is in its layers. Fixing a common issue with the sniper efi injector plus. After installing the Sniper and running for a few weeks with the initial air/fuel settings as mentioned, I saw roughly 1 ½ to two-miles per gallon increase. Several companies offer in-tank fuel pump conversions, such as Aeromotive's Phantom system and Holley's Sniper tanks. And then the Sniper would add fuel thinking the engine was running a lean condition. The handheld does report temp readings when monitoring sensors during "key on" and when the engine is running, but do not seem to reflect reality. Each time the wire is pulled away from ground a spark should jump from the coil wire to ground. I have a Holden Commodore with a 304 (5. Learn about sniper teams and sniper team weapon systems. I've ordered a new WBO2 sensor to see if it fixes the problem of 35. CR Nuts Motorsports · 47K views ; Holley Sniper How To Set The IAC (Idle Air&nb. Make sure the spark plug wires are in good condition and every sensor wire is as far away from high voltage sources as possible (like distributor, coil, spark plug wires, even the alternator). For Troubleshooting Tips setting up your New Holley Sniper EFI System, please see this helpful video from Holley Performance. nano machine reaper scans In this video, we walk you through choosing. akatsuki tattoo ideas It fired up perfectly first try and I let it idle for about 30 min while I let it Learn. 10 gears, 35" tires It defaults to 36 degrees total timing and I am set at 32 degrees at WOT. If you see any of these errors for a sensor that. I have a somewhat basic Sniper XFlow installation. Each time, the same results: Noise on the RPM signal that is creating havoc. Thanks for sharing the actual facts, Matt. I need some help troubleshooting a problem. Ohms readings on 20K Ohm scale on digital Fluke meter and all three sensors in the shop and up to shop temp of 70°F tested on the tip of all three to verify the same temp with the IR temp gun. I have a 383 stroker in a '69 Camaro. Everything is plugged together, no bent pins or anything obvious is damaged. The Sniper specific applications connect to your Sniper EFI system via CAN bus and is …. You can tweak settings as needed to optimize your engine’s performance based on the current conditions. I also have an in-tank Sniper fuel pump. May 25, 2017 · I bought a new holley sniper , dual sync dist. The magic plastic cap will get you close but not exactly synced. AFR is below 12 even though target is set to 13. The client cannot redo the Wizard, when we make any changes, when we turn the key, everything is lost. TPS issue? Troubleshooting? Holley EFI Tips. Find the troubleshooting guide for Sniper EFI, a fuel injection system for Holley EFI applications. '69 Camaro, 400 SBC, ProCharger D1SC. Thanks for the input, though, a bit disappointing to hear that zip ties are the generally accepted solution. It has a Pro-Billet distributor, 6AL and the Sniper. Holley Sniper Air Fuel Ratio Issues & Start Up Issues Symptoms & FixCR Nuts Episode #16 Three start up issues that we encountered and fixed- Low Fuel Pressur. Holley EFI systems and does not include information on using many of the features this system offers. If you are using your Sniper EFI System …. Engine temperatures around 200°F seem to cause problems on some installations. Sniper EFI is recommended, fuel pressure needs to be between 55-65 PSI. Holley EFI Troubleshooting: A 3% Error Caused THIS! Want to Learn How To TUNE Holley Efi, Terminator X, and. Until it decides to high idle again. Timing/IAC problems, help! 05-02-2020, 08:02 PM. All Sniper wires are separated as far as possible from the spark plug wires, at least as far as possible with a SBC. 5,527: 52,529: Full lean at WOT, and after driving for 20 minutes. Your engine is running fairly warm, the temperature is not a concern, but there are temperature related functions that can cause running problems. “If you have ignition problems, vacuum leaks, valvetrain issues, or bad fuel, you need to correct those things before you convert over to fuel injection. sniper 2 sniper 2 upgrade sniper efi 2. The 2x4 Sniper EFI systems do not have a ported vacuum port normally used for a vacuum advanced distributor. When your power windows are not functioning properly, then you may end. zip I'm wondering if the Sniper itself is the issue. Topics: 5,529 Posts: 52,543 Last Post Having a couple of problems that I sure could use some help with Channel: Sniper EFI. • PDM includes built in Diagnostic LED’s to help with troubleshooting. Forgive any ignorance, but I'm trying to figure out where to begin trying to diagnose what could be the problem, or problems with my setup. This in-tank fuel pump module is a high-pressure unit that flows 255 liters per hour (LPH) and is capable of supporting electronic fuel injection (EFI) engines producing up to 550 horsepower. Learn to troubleshoot a heat pump. 1 Sniper Stealth 4500 (550-841 Shiny, 550-842 Black, & 550-843 Gold) Holley Sniper EFI FUEL INJECTION INSTALLATION MANUAL. Jul 4, 2023 · Warm Starting Issue. This was after I moved the two Sniper connectors (7 & 10 pin) around the back of the Sniper (they were running right next to the distributor originally). It's also very rich, I've made a few adjustment from things I've read on this forum, but now I'm stuck. Called Holley after checking everything. Jul 16, 2020 · We're Hiring! https://v8speedshop. Page 21 The GCF Wizard is a base calibration selection tool used with Sniper EFI kits. Disconnect the MSD White wire from the distributor points or the ignition amplifier. I replaced the gas tank (Tanks, Inc. To solve the massive drivability problems, it was time to ditch the carb and convert to modern EFI. Bob, If it wasn't for bad luck you would have any luck when it comes to EFI system. It also distributes power to your EFI fuel pump and a single fan (second fan can be ground …. 5 or leaner and feels almost like a rev limiter. Electric fuel pumps only produce volume, the fuel pressure regulator creates the desired pressure. Thus, Holley can not guarantee an answer or timing on an. Cam Specs 248°/256° @ 112° (installed straight up) with 1. Used for high performance or larger displ. Sniper was working fine, but suddenly no spark. The fuel pump is Aero 750 which claims has 20 amp draw so should be fine with the preinstalled 30 amp. Instead, it compares until each category has "timed out". chevy tahoe for sale mn craigslist Over the last couple days we've had temps down into the single digits and a few dips below zero. Other some what common issue to look for is single injector is bad. The voltage should increase smoothly from 0. Online: Is shown when the Laptop and ECU are communicating. Observing the temperature on the 3. Supports up to 650HP naturally …. You should reduce the Base Fuel Table by 20% and then try it again. Enjoy all the benefits of EFI by upgrading to this Holley Sniper system—with performance. Learn how to check for potential problems with Holley EFI systems, such as fuel pressure, injector pulse, and spark output. When fuel pressure is high, the Sniper will restrict injector flow to try to lean the system. 898#post227898 (Holley Sniper EFI Replacement CTS) May God's grace bless you in the Lord Jesus. Hit the key and it started right up. (Holley Sniper EFI RFI/EMI Issues) May God's grace bless you in the Lord Jesus Christ. Mostly tuning is the problem, it starts up, but then it dies when climbing to operating temp. Jul 21, 2017 · The instructions (PDF file) & ECU firmware (. Connect the main battery ground to the stock location on the alternator bracket with a star washer and make sure the surface is clean. daniel winn kwwl leaving I have to increase the spring tension by cutting both spring mounts to make things work properly. ) with the Sniper HyperSpark CD box & Distributor and it's been running great. I have yet to have it run right. the Sniper EFI fuel pressure regulator is the same type of OEM fuel pressure regulator. Holley Sniper EFI First Start Up & Setting the IAC adjustmentIn the first video I showed you how to install the complete Holley sniper EFI sytem including th. Sniper EFI 4150 Stalling, Handheld no data. Both red & black wires are going directly to the battery. Also the connector for the CAN Bus cable was bound near plug wires. Some TBI systems like the revised MSD Atomic and the Holley Sniper (among others) allow you to access and expand upon the …. Hyper Spark Distributors are the perfect distributor for use with EFI systems when controlling timing from the EFI controller. If you have sent an item in for repair and want to check its status, please call the respective tech line below. Holley and Hooker have partnered together to offer the most versatile and complete LS swap kits on the market so you can install the GM LS engine into your favorite chassis!. “The Sniper Stealth 4500 EFI system was the first of its kind – a throttle body-based 4500 EFI,” says Matthew D. The car is a 1968 Mustang with a crate 302 High Performance engine (supposedly 320 HP). Am strongly considering the Holley SNIPER TBI system. pasl test On & off have had multiple issues with the system leaving me stranded in regards to the IAC valve and the WBO2 sensor. After going through several tests with Holley techs cranking & cranking trying different things the unit now just turns over without even starting for the 2-3 second second interval. 17 (No Update) / Software version 1. Check for ignition misfires/RPM signal problems, exhaust leak upstream of WBO2 sensor, or if the WBO2 sensor (or other sensor) has failed and corrupted the Learn Table. The Sniper can't lean it out since you have a pig rich fuel map and you set the Limits at 50%. Ive tuned a few cars with the holley software and never run into this, so I though Id pick your brains to put mine at ease. Login or Sign Up Logging in Remember me. Jul 26, 2023 · The number 1 EFI conversion just got better. Perfect for street rods, hot rods, muscle cars, off-roaders and just about any carbureted vehicle, Sniper EFI will put an end to cold. If you have any questions, call our Technical Support Department at 866-464-6553. I bought the master kit and everything is installed correctly per the manual. I installed the new Holley HyperSpark ignition system on the 11th. Ignition and Electrical Components. Random misfire (can't locate) and running rough. The GM LS engine has quickly become the high-performance standard in the performance aftermarket. Zip and post this datalog so we can see what's happening. The fuel pump relay needs to have +12V to the #86 terminal, #85 is the light blue Sniper fuel pump wire. Once it gets to 180-190°F and fans start to kick on & off at idle, the engine starts to stumble and. 5" Hi Flow V-Tex merge pipe with dual 2. The efi will not solve all the problems that a 1V carb has but it will solve some of them. Discover how the SNIPER sales strategy can help you close far more deals. What you are likely seeing is an ECU reset. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. Offering support up to 1500 HP + a ton of extra fueling and ignition accessories available Holley has a complete system for your build. Sniper EFI 2300 2-Barrel Self Tuning Kit. Problem is, it can start fine & run in idle. To do this, open up the Initial Startup gauge screen that was used in section 17. I've got a 350 SBC with a Holley Sniper system in my 80 series Land Cruiser. Depending on your application, this is also the time to install your throttle bracket and transmission kickdown brackets provided with your Sniper EFI Kit. 1:1 compression, P&P head with enlarged valves, high flow exhaust.