Holley sniper forums of Technology
Holley have revised the EFI software/support download page and now have two sections: Sniper 1 version 1.3 Build 50 files and Sniper 1 version 2 files. As stated, the version 2 files (EFI software/ECU firmware) are required for Sniper transmission control. ... Please be aware that this is a community forum. Although Holley employees will take ...WBO2 Problems. 05-15-2024, 02:10 PM. Hey y'all. At a loss for some problems I'm having with the sniper we have. Background first, first gen Sniper, it's on a 225 Slant Six. The engine is not stock, bored .030" over and has a .472" lift cam, and has about 14-15 inHg of vacuum. Stock 6 into 1 manifold with the sensor about 3-4 inches off the ...Jan 16, 2022 · Second failed Sniper! 01-16-2022, 07:56 PM. I had to return my first unit about six months ago after only a few hundred miles of use. I sent it in to Holley for repair, which took forever, so they finally ended up giving me a whole new unit. Put that one on about a 1000 miles ago (four months) and it has now failed again.Yellow & red are the warnings that are programmed into the sensors. If you want to change them you can. I usually put the CTS yellow at 210°F and red at 220°F. MAT isn't super important for N/A, you usually only worry about MAT with a turbo or blower. You can set yellow on the MAT at 150°F and red at 180°F.And as of today I have exhausted all research, reading and troubleshooting for my Holley Sniper. 1 - This unit has been working since May of 2019 until March 10th 2020. I installed the new Holley HyperSpark ignition system on the 11th. Distributor, Coil and Ignition box. Truck fired up and ran after installation.I recently decided to upgrade from a Holley 4500 Dominator 1050 cfm to a Sniper Stealth EFI. I replaced the gas tank (Tanks, Inc.), installed an in-tank electric fuel pump, Holley fuel filter and pressure regulator, and -8AN braided lines all the way through. ... I read on another forum post about the suggested Hex-1 extender, which I installed ...06-27-2022, 08:51 AM. I'm experiencing a very lean condition with light acceleration. When I ease into the throttle to just drive ahead a few feet the AFR goes to 18 - 20 and the engine nearly dies. If you really whack the throttle it responds great. 355 SBC, Victor Jr. heads, 240°/245° @ .050 Hydraulic roller cam.'92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, Eagle 3.470" forged steel crankshaft & H-beam rods, Wiseco 4.200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration/.623" lift/114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp Ported intake, BBK 80mm ...Sniper EFI Tuning & Tech. May God's grace bless you in the Lord Jesus Christ. '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, Eagle 3.470" forged steel crankshaft & H-beam rods, Wiseco 4.200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration/.623" lift/114° LSA H/R camshaft, Trick Flow R-Series FlowTech Induction Comp ...Again, this may be a faulty Base Fuel Table or lack of pressure or a bad injector. Step 1 - measure your pressure. Step 2 - remove your air cleaner and have someone turn on the ignition. Watch for the prime shot. All four injectors should provide equal amounts of fuel.Come to find out, the monitor wire got caught up in the clutch mechanism and it shorted out the ECU in the Sniper. After running some test with Holley Tech Support it was decided to remove it and sent back to replace the ECU & Monitor. Holley Tech Support had me remove the SD card with the current tune setup. They advised that the new ECU …Sniper EFI. If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. …Tuning a 2300 Holley Carburetor is a straightforward process thanks to Holley's simple design and exterior tuning capability, meaning the carburetor may be adjusted on the fly whil...Tweet. #1. Stalling when stopping or coasting. 10-01-2022, 05:39 PM. Hoping to get some help as i'm cooked! I have a SBC 350 and when I come to a stop, or slow down and coast from time to time (say once a trip), the car will lose RPM and stall. This usually happens when I'm in neutral.Please be aware that this is a community forum. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. ... yada, but don't realize that's for the other Holley EFI systems and not Sniper EFI. Anyway, my Blanking values are at the stock settings ...Please be aware that this is a community forum. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Thus, Holley can not guarantee an answer or timing on an answer. ... "Holley" folder, "Sniper" folder, "Data Logs" folder (.dl file).Sniper AFR Problems. 03-03-2024, 06:17 PM. A problem has started with after around five minutes of driving. The A/F ratio starts to go past 20 and the truck lays down on itself. once it's restarted it drives as should, until a few minutes later the same problem appears. The Sniper has been on this truck for around two years and this problem has ...Apr 28, 2024 · Holley Sniper Base Timing Table. 04-28-2024, 10:54 AM. Hey, was hoping you all could look at my Base Timing Table. I have 383 stroker SBC with 9.5 CR, AFR Enforcer heads and Howard's cam. 218° intake/226° exhaust and 1600-5600 RPM range. I was interested to know if I can advance it more based on how it looks and from experience.05-04-2022, 04:20 PM. # 1. DiabolicalDave. Drifting. Thread Starter. Member Since: Apr 2001. Location: Portugal. Posts: 1,476. Likes: 354. Received 147 Likes on 102 Posts. …06-23-2019, 05:25 AM. I've had to swap from my old M&W CDI module back to a Sniper Coil Driver as the CDI Unit has failed. I have reconfigured the Holley Terminator Stealth ECU from a EST 12V Trigger Output back to a Points Output Adjustable Dwell to suit the Sniper Coil Driver. I've also swapped from a Crane LX92 coil back to a regular Bosch ...It could be made functional for Super Sniper owners if Holley provided a firmware update to map the appropriate CAN Channel ID # to a custom input. Alternate options: If you have a Super Sniper with spare 0-5v inputs, you can install your own oil pressure sender and map to 'Custom Input #' on the Dash 1, 2, or 3 layouts on the Sniper 3.5" TSLCD.Tweet. #2. 04-20-2024, 08:38 AM. Ensure the fuel injectors or spark plug wires, or any other high voltage wiring isn't too close to the IAC motor/wiring. The IAC motor is easily susceptible to electrical interference, and it'll cause strange occurrences and become inoperable. Or maybe the IAC motor is defective.1) Tick tick tick tick tick at idle, know what I’m talking about. 2) Tight pedal and having to use the extension. 3) Need to add carb spacer, make the stock air cleaner sit 2” too high, and just did not look right. 4) Random high RPM and idle down issue. 5) Random car runs bad and spending hours looking for a wire or vacuum line leak.Jul 19, 2022 · Tweet. #1. Some odd things happening with the Sniper. 07-18-2022, 12:44 PM. I've been running my Sniper in my '68 302 Mustang for about one year. It's been running solid. While it's not getting many miles, the time before last, it killed when shifting into reverse on a fresh start. Started up and ran fine. Yesterday, it started and engine was ...The Sniper is fitted into a 1969 Jensen Interceptor and is relatively discrete. The Jensen now starts first time, has a quiet idle and drives beautifully. No heat sink issues with the big Chrysler 440 (bored out to 452CI). I even managed 14 MPG (16.8 MPG US) on a pretty quick 200 mile road trip.Please be aware that this is a community forum. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. ... Specs: Holley Sniper 550-511. 1973 AMC 360 bored .030". Stockish compression. Comp cam 270H. Edelbrock RPM Air-Gap Intake. D.U.I …Please be aware that this is a community forum. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. ... 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.Please be aware that this is a community forum. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. ... 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.Please be aware that this is a community forum. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. ... "Holley" folder, "Sniper" folder, "Config Files" folder (.hefi file). Your Datalogs are in the "Documents", "Holley" folder, "Sniper" folder, "Data ...The 3.5" TSLCD mounting bracket is a simple flat sheet of stainless steel. It has a section cut & bent 90° to form a mounting tab with a bolt hole. The mounting bracket is adhered to the back of the plastic sleeve. with 3M/Scotch 'Permanent Outdoor Mounting Tape' (thin, dark gray, double-sided, foam tape).Sniper Teams - Sniper teams consist of two people thereby getting the most out of a sniper rifle weapon system. Learn about sniper teams and sniper team weapon systems. Advertiseme...Sep 2, 2023 · What I have: 454 Chevy Square Body. New Sniper EFI install, having issues with AFR spikes when up to operating temperatures. Sometimes dies or stalls and catches itself. Sometimes erratic idle when warm as well. Any help would be greatly appreciated. Thanks. (Datalogs posted with truck driving and one of it idling.)Share. Tweet. #1. Sudden erratic behavior, high AFR. 07-31-2022, 09:29 AM. Hi there. I have a 351 Cleveland in an Aussie XE Ford Falcon wagon running a sniper and a hyperspark. I installed the Holley parts a couple of years ago and while I haven't put on more than a couple of thousand kilometers, I haven't had any trouble to date!If it's not, turn the distributor until it is. Once you have confirmed that the Cranking Timing is correct, reinstall the fuel pump relay and start the engine. At this point, if the timing is set properly it should idle. With the engine running look down the Sniper and ensure that all injectors are firing.To start viewing messages, select the forum that you want to visit from the selection below. Please be aware that this is a community forum. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. ... Holley oversells the Sniper by saying the …Tweet. #1. RFI issues on a SBF. *SOLVED*. 11-27-2022, 05:58 PM. Rewired everything three times now, every power wire is separated from signal wires and is wrapped in Faraday tape or in tinned copper metal braid sleeves with grounding leads, no change. Harness signal wires wrapped/sleeved, no change.I have a buddy trying to update the FW on a Sniper, and he's getting a Searching For ECU message on the 3.5" TSLCD. From searching the forums and the interwebs, it sounds like this is caused by a mismatch in FW versions between the 3.5" TSLCD and the ECU, the ECU is not getting power, or the ECU is bricked. That inTweet. #1. New Sniper, hard starts & stalling after 15 seconds. 12-11-2022, 08:01 PM. Hey guys. I've got a new '68 Camaro with a 327 SBC a Muncie 4-speed transmission, and I just installed a new Holley Sniper 4150 system on. Ever since day one I've been having hard starting issues when both hot & cold that I could use some advice on.Thanks in advance. Wez. I believe the default location when saving a Config File from the PC software is on the C:Drive in a folder in Documents>Holley>Sniper>Config Files>Custom Cals. But certainly if you have the SD card installed you can "Save As" and navigate to the card.Forum; Holley EFI; Sniper EFI If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Please be aware that this is a community forum. ...As throttle is applied, AFR goes to 17.1, then CL Comp comes in at 34% at 118.5 seconds trying to correct the lean condition. By 122.5 seconds, it realizes that it's adding too much fuel (AFR is at 9.9 at the lowest), and pulls out 34% resulting in the AFR going back to 16.0 at around 124 seconds.On my sniper install (New Pace Performance Crate Engine, mild cam, 390 HP) the rpm's would climb/surge on start ups. The advise from Holley rep was to close off the IAC port with tape. Set the linkage screw for idle (mine about 650). Pull the tape and idle should remain the same, IAC gauge reading 7-9.Stalls. 01-24-2024, 04:30 PM. Need help. Since it got cold (below 50°F), when I start my car every few weeks it runs for a few minutes then stalls out. Have to turn key off wait a few minutes and it'll restart. Once warmed up it'll keep running.Please be aware that this is a community forum. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Thus, Holley can not guarantee an answer or timing on an answer. ... "Holley" folder, "Sniper" folder, "Data Logs" folder (.dl file).Please be aware that this is a community forum. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Thus, Holley can not guarantee an answer or timing on an answer. ... "Holley" folder, "Sniper" folder, "Data Logs" folder (.dl file).Feb 13, 2024 · Tweet. #2. 02-13-2024, 11:58 AM. The IAC Position will read high if you have the idle screw out too far. Turn the idle screw in 1/2 turn and then restart. The Sniper auto-zeros the TPS each time you cycle the ignition, so it will find a new zero after you adjust it.Again, this may be a faulty Base Fuel Table or lack of pressure or a bad injector. Step 1 - measure your pressure. Step 2 - remove your air cleaner and have someone turn on the ignition. Watch for the prime shot. All four injectors should provide equal amounts of fuel.Hi. I have an older Sniper on my '65 Dodge pickup with 440. I installed the Sniper universal tank with internal 255 LPH pump. Truck runs good at idle, and low speeds. I installed an external Holley regulator. Pressure rock steady at 60 psi, but drops when RPM is increased. I capped the return and pressure pegs out when pumpNew Forum Member - Cold Start Tuning. 12-08-2022, 11:46 AM. First off hello everyone. I've had my 550-516 Sniper installed since 2018, and my '69 351W has never run better. However, the cold start has always smelled really rich. I finally had the time to try and tune the cold start using the Sniper EFI software.Tweet. #1. Intermittent high idle - Sniper EFI. 03-31-2018, 12:54 PM. I'm new to Holley Sniper EFI. I've had it installed for a couple months. My only complaint is I think it's very slow to come back to idle when coming to a stop light (manual transmission). My bigger issue is the past few times I've driven it (weekend warrior), after about 20 ...Nov 6, 2021 · Sniper causing overheating. I have a '63 Galaxy with a 390 FE in it. I'm running Sniper kit #550-511K, MSD 23803 Dual Sync distributor, coil driver module 556-150, and coil 556-152. Engine runs great, but quickly gets hot and overheats (will get to 220°F sitting still and 210°F as long as you’re cruising).Please be aware that this is a community forum. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. ... (Holley Sniper EFI A/C IAC Kick, Electric Fan #1/#2 Wiring & A/C Shutdown Info) May God's grace bless you in the Lord Jesus Christ. '92 Ford Mustang ...A loud fuel pump is usually an indication of fuel pump cavitation or maybe a clogged filter (s). Inspect/troubleshoot/service the fuel system (fuel pump, cavitation, plumbing, voltage, filters, pickup tube, tank venting, etc.). A datalog will just verify a problem with the fuel pressure, injector duty cycle, pulse width, etc. Before fuel pump ... The Sniper bracket is the same basic geometryShare. Tweet. #1. Strange Sniper Datalog. 04-Injector stuck open, help! 04-22-2023, 03:25
