Ok, as I said at the top, this course is going to be a work in progress (and that's all the progress I can make today!) It probably wouldn't even work very well on a dual-plane manifold with a spacer, since the weight of the fuel might not make the sharp turn very well..On a single-plane manifold, however, I can't think of a problem other than a strange orientation of the linkage, but I'm sure you are thinking about that in making this decision. I spent Turkey weekend removing my Holley 4Di FI, tons of wiring and sensors, and installing my new sniper, way much less wiring. See "Touch Screen Update" instructions. carb and a mild performance camshaft. I am installing a Sniper EFI on a 1992 Mustang 5.0L using a Holley dual sync distributor and an MSD 6AL CD box. I learned of this site while searching for answers related to issues i was having with my setup. If you still have power then that might be a good candidate for your Sniper switched-on signal. Even before this, I would go to car shows and tell people to buy and they would love it, I love it, hit the key and it fires right up and runs amazing. Its been all smiles driving the Blazer now. Holley EFI Updating Firmware Instructions, Holley EFI Datalogger Instructions for V3 software, Gen III HEMI EFI Component Selection Chart, HP and Dominator EFI Component Selection Chart, Previous Holley EFI V4 Software and Firmware, Holley EFI V5 Build 171 Complete File Set. By steven v on February 15, 2018 | Verified Owner. Okay, I kind of have to chuckle at this one. Check the voltage on your pink (switched +12v) with the key off. That doesn't mean we view our minds as the only source of information. An ignition coil driver (Holley Internal PN 271R1165A, PN 556-150) is included in the Sniper kit and is required to run the Sniper with timing control if no MSD ignition box is used.
Sniper EFI Installation Guide - Holley Motor Life I have a similar problem with restarting my vehicle after it's been driven for a while and gotten up to temperature. The only downside is that there are quite a few options to pick from when looking at the best aftermarket EFI systems, but a quick guides all it takes to sort things out. instructions say 12 volts key on and while cranking and have looked up and seen other people using extra terminal in fuse block that i dont have so was curious what best place to connect. Started 1971 Blazer up and only adjusted AFR and runs amazing. Let me know where I can be of assistance!
Those that have successfully done Holley Sniper EFI There are default on and off temperatures, but the default doesn't switch the fans on. The Sniper EFI system looks at the closed-loop fuel compensation required to reach your target AFR. Should this idea work? I'm not being negative, just sharing some things that would have been good to know.Bee Jay. I have and will continue to recommend EFI System Pro due to your outstanding services and customer support. Yes, you can as long as the intake is drilled for a dual bolt pattern and will clear square-bore throttle plate spacing. Let me say the Sniper was similar in install for wiring and such so follow instruction with routing wires. Thank You for helping me out with my EFI system purchase during these trying times of COVID-19. what is the best plate system to run with the sniper, and which distributor should i run for timing control with the (wet) nitrous system? My engine is a 383 Stroker Blueprint Crate Motor in a 55 Belair HT 405 hp and 440 torque. - NO laptop required! your help is greatly appreciated. That number will normally drop a little bit. EFI Systems based on Holley's world-class Dominator and HP ECU's. Contains the latest V2 3.5" touch screen firmware and installation instructions, Contains the latest V3 touch screen firmware, Contains latest V4 firmware and installation instructions for the 553-108 3.5 Touch Screen, Holley EFI V5 Firmware update for 3.5" TSLCD, Holley EFI Boost Control Quick Start Guide, Holley EFI 16 Injector Setup (8 Cylinder Engines) Setup of 8 Injectors in 8:2 Amp Peak and Hold Mode.
Best Aftermarket EFI Systems (Review & Buying Guide) in 2023 EFI systems are not and never will provide a substitute for good engine tuning techniques. Do the injectors care which way they are oriented as long as the exhaust readings are where they need to be the Efi shouldn't care how it sits, correct? It is recommended that all Touch Screen users that purchased a Holley EFI touch screen before June 2011, and experience a battery drain over 2-3 weeks, install this update. https://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_quadrajet/ It's time to move towards better fuel economy, increased performance and perfect cold starts. Once it starts to run on its on the performance and response is great ! If this works as well as I hope it does, I look forward to purchasing another for my 65 malibu. The good, the bad, and learn from my frustration - Mustang F That price likely wont cover everything, though. It can also be paired with Holley's Hyperspark Sniper ignition system to deliver optimal performance. That's why we included a list of alternative options below. But I think that if you are destined to go this route then you would be best off to repurpose that standard Sniper and go with a Super Sniper. The purpose of the boost (or manifold pressure) reference port on the regulator is to ensure that the pressure of the fuel line relative to the pressure at the outlet of the injector is fixed. Contains latest V4 software (software version 4.0 Build 110). This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles. High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays. V3 is updates are not needed for most users. Air entry is machined to fit most stock style air cleaners with air cleaner locator provisions. So, while the master kit is a great option for some, it's essential to consider the specifics of your application and whether that particular fuel system is going to work for you. Based on your knowledge and expertise, where do you recommend plumbing the boost reference port? With the help of some youtube videos for fine tune (iac for idle), this setup works good. The four-injector Sniper is rated to handle up to 650 HP but not if 200 of those HP are made from Nitrous, which requires a higher brake-specific fuel consumption. The Terminator EFI can conceivably work, but that is because a professional EFI tuner can attach a laptop and the Holley EFI software and make the necessary adjustments (after upgrading the 1-bar MAP sensor, of course.). In lower horsepower applications a 5/16" supply line can be utilized but it is vital to take multiple pressure readings to ensure consistency. Today, 11:57 AM Hi. The Sniper will require 58-60PSI. This behavior is controlled by the IAC Parked Position and the Startup IAC Position Hold and Decay Time in the Idle configuration. I'll be going with the Holley replacement tank kit as well, replacing all the fuel lines (true FINAL PRE-V2 FIRMWARE - Firmware must be installed with tuning software version 1.1.5 Build 3 located above. Also, my MAP reading is often below 50. I just did a Sniper install on my Chevelle a few weeks ago. Includes V4 updates and information. V1.5.0.3. I would recommend installing it initially with the ignition you have now. It's also a self-learning system, meaning you don't need to be a tuning expert to get it running. Do your systems support Transmission control? There are quite a few steps to correctly installing the ECU-controlled timing setup using the rotor phasing kit but the end result is a top-notch computer-controlled ignition for a very reasonable price. 50% learn doesn't mean that you're half way there. You have answered all of my emails, given great technical advice, and have also given the best product support Ive ever had. I have installed the sniper system on a 302 in a 64 ford f-100 with a c-4 automatic one of the issues I have is the system will not hold closed loop, and it will also learn up to about 22% and then it will start unlearning where it goes to a - deg learn % also it has an issue of starting off the start up screen, but if you go to any one of the gauge screens it will start and run? It's a 400ci car and it was originally a "Spark Control Computer" Car. I set the idle at 900 rpm in the handheld, but whenever I exercise the throttle, the idle is way too high. What would have changed that overnight is going to take some old-fashioned troubleshooting.The first thing to do is look at the red diagnostic LED on the MSD6 box. Traction control does take an add-on box, but it is far less expensive than the complete Davis Traction Control system because it uses the brains of the Terminator.I've only touched on the features that are basically "standard" with the Terminator LS but either require a new tune on the stock ECU or are completely impossible. :-). Even with a smaller engine such as you suggest, the amount of fuel specified in the base fuel map is injected based on the pulse width calculated using the fuel pressure. Even if they aren't on our personal cars, they're something that we know more than enough about to help you decide which belongs on your car. Compatible firmware is included in the software installer. WebFord 390 Engine hesitating / stutter. Great product extremely pleased with the shipping speed and most importantly the product itself. Your help is appreciated. By Steven L on February 16, 2018 | Verified Owner. I think that i need to fit another map sensor to the manifold instead of using the throttle body mounted one. The first and most-likely choice is throttle body injection (TBI). Holley EFI Datalogger Instructions for V3 software. BTW, can I get another stylus please. LS Fest West 2023: LS Swapped 1967 Twin Turbo Slingshot Dragster, This 1964 Ford Galaxie Restomod Packs A High-Voltage Punch. Yes, the combination of the Sniper EFI System, Holley HyperSpark distributor, and the Sniper Fuel Tank System would be a great combination for your '69 Camaro. I am not aware of a dry nitrous system that lets you save money by leaving out the fueling solenoid and other components so just buy one that has that and you can leave those components out if you intend to do dry nitrous.At the horsepower levels you suggest you will definitely need to opt for the eight-injector Super Sniper. I did not buy my holley sniper from EFI Pro Systems. If you rotate the Sniper 90 degrees on a dual-plane manifold then only one side would get any air/fuel at idle. Am I missing something here? Make sure the switched 12V stays powered during crank if not, it is likely wired to accessory, and not crank/ run. Included clamp-on oxygen sensor kit for 2.25" exhaust ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange, Available in 3 finishes: Shiny, Black and coming soon, Gold, Bolt on 2300 Flange Carburetor Replacement, Supports up to 350HP with Two 100lb/hr Injectors, Equipped with C4 / C6 Ford transmission kickdown lever as well as TH350, 400 and 700R4 provisions, Accepts many common 5 1/8" OEM or aftermarket air cleaner assemblies, Sniper EFI Software free to download which allows for realtime tuning, Printable throttle body flange template included, Available in 3 Finishes - Classic Gold, Shiny and Black Ceramic. It can stage two sets on a 4 cylinder. If I feather the gas it will stay running but bogs a lot and lots of black smoke from running too rich. Supports up to 500hp with Four 100 Lb/Hr Injectors! Rather than set myself up for another phone call, I'll just say that sometimes enhanced performance can be gained by adding an air gap to a dual-plane manifold (regardless of the fuel induction system.) This type works by placing the fuel injectors in the throttle body, creating a situation where a controlled mixture of fuel and air is pulled through the manifold. Some information in this manual will not apply to V2 and earlier software versions. Go to the below link, and scroll down to Sniper EFI Software. Our reviews are driven by a combination of hands-on testing, expert input, wisdom of the crowd assessments from actual buyers, and our own expertise. The instructions say I need to wire the main power and ground wire directly to the Battery. I found that the EFIPRO throttle lever extender and progressive linkage together made the sniper much more streetable. They are all wide band systems. The instructions don't say anything about the PCV source, but I assumed this location was ok. Am I wrong? The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn! It's not a show car - it's just a nice old car we keep around but I'd like to improve the drivability as my wife is less forgiving of the odd stall than I am. No issues with it at all yet. The integrated Fuel pressure regulator simplifies plumbing/installation! Doing otherwise invariably either requires that the manual adjustment be changed later (after the tune is finished) or else results in a tune that compensates for the manual adjustment. But if you patiently check your connections I think that you're going to find your problem. Are your injection systems emissions legal? Nor is there provision for an external sensor. installed the master kit on my camaro .. went pretty smooth .. just over 5 hours start to finish .. works great . I love your question! If it is not flashing when you are cranking, check that the unit is correctly powered and the connection and signal coming from your crank signal source (distributor, crank trigger wheel, etc. Good job! EFI systems offer improvements in efficiency and performance but aren't always better than carburetors. Input/Output Harness for Sniper EFI Systems, -6 AN Port Plug w/ O-Ring Seal, Black Anodized Aluminum - 2 pieces, Main Battery Harness with Fuse and Fuel Pump Relay, Oxygen Sensor O2 Bung 3" Clamp-On Style for all vehicles that utilize an Oxygen sensor, Hooker Blackheart Oxygen Sensor O2 Bung 2.5" Clamp-On style, Hooker Blackheart Oxygen Sensor O2 Bung 2.25" Clamp-On style. Self-tuning ECU means you dont have to be a computer/tuning wiz to have EFI! Connects directly to battery positive terminal - CONNECT LAST, Connects directly to battery negative terminal - CONNECT LAST, Engine Speed Input (ONLY FOR USE WITH COIL (-) IGNITION SETUP), Optional - Connect to aftermarket tachometer, Optional - Connect to Holley EFI Analog Gauges (using 554-130 Module), Optional - Used for programmable 0-5V sensor input, Optional - Used for programmable ground output. No. IMPORTANT DOWNLOAD - These contain new instructions for V2 Installation, Features, Boost Control, and Traction Control. As always feel free to edit as required. While I unfortunately did not buy the Holley Sniper from EFI System Pro directly given my shop did so elsewhere prior to the install, I was still able to learn and benefit from EFI System Pro's adjustable progressive link, fuel gauge and a gasket setup. Unfortunately, that is going to actually increase the problem a little bit. OEM Style Throttle Position Senser (TPS)/ and Idle Air Control (IAC) for years of dependable service. Sniper EFI Software/Installer v1.3 Build:50 - Windows Vista,7,8,10 Compatible. Sometimes the ket gets back in the "on" position fast enough for the Sniper to start up, recognize the engine is running, and start fueling the engine. That elicited a phone call from Holley Engineering who explained I was absolutely wrong about that. So you're ready to switch from carburetor to fuel injection, but you're unsure of what all is involved. I used the unused plug in the front of the throttle body for my PCV vacuum source. I want to remove my MSD box from the equation and use the distributor as a trigger. That doesn't mean you'll always pick up horsepower by making the swap, though. Why are the screens on the sniper flashing Yellow and Red? You will need to check local and state emissions regulations. The direction you go from there must be guided by your own read of the plugs as well as what you hear and feel in the engine. Changes include updates to run Holley EFI Coyote VVT Module, Drive-By-Wire updates, and other items. You've got questions. Suggestion number 1, the handheld display should have a holder for the stylus. Stay up to date with the latest releases, events, promotions and more. While a single plan manifold can have better distribution for a throttle body application, The Sniper is fully capable of being utilized on a dual plane manifold. Started up and ran great on first crank. I still haven't driven the car, waiting on a new fuel pump.Also, you can't make changes with the engine running. To my knowledge, it is not possible to use a factory GM small cap HEI distributor with the Sniper doing timing control. The Holley 556-150 ignition coil driver is for ECU controlled timing with the Sniper EFI. The easiest answer on the fuel system is to buy the Sniper with the Master Kit, which includes pump, hose, fittings, filters, and fuel bulkhead. If you don't already have them, Please download the following PDF files: Owners & Installation Manual Unfortunately, doing Sniper ignition control with the stock distributor is not an option that is supported by Holley. The install video was much more helpful to me than the written instructions. These are easy to install, work wonderfully and are a good bit less expensive than the complete tank (especially when you factor in the cost of installation components.). If you have a GM or Ford application and already have an MSD magnetic distributor, Option 2 is a good choice. After this installation she starts like a car with better performance and I have increased my range by 25%-30%. After a little more probing of fuse block and existing wires that i could tap into i finally found one that holds the 12 volts in on position plus in crank position. You have to tell the computer that you want it to operate the fans. Bolt on carburetor replacement (designed to fit single & dual carb manifolds) We actually recommend initially starting the engine with your existing conventional ignition system if it is in place and properly functioning. The core of this kit is great, the install is not as intimidating as it might seem; however the videos created by Holley and uploaded on this site misrepresent what is actually in the kit, be aware that you will not receive any throttle linkage components or connectors as stated. When I started the car again, it idled great, but when I gave it gas to rev the engine a little, it settled to a ridiculously high idle. If this wire is holding residual voltage, even though it seems low, it could be preventing a proper key cycle which saves changes. Capability Range: Advanced The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn! Can someone give me a quick explanation of what the coil driver is used for? Connecting them directly to the battery is one of the most important steps of the installation. (Battery +, Battery - , Switched Ignition & RPM). The Sniper will have the same height as A Holley carburetor @ 3.25. If you see the IAC settle down to zero when the engine is fully warm you would want to turn your idle speed screw out (shutting the throttle plates) just a tiny bit. The fuel system is a good example of this. I was concerned with the performance of the Sniper to run this motor. The engine has to be "stalled", not running, with the ignition key on. Your engine came with a spread bore carb on it from the factory. It is likely you will have to run a more-expensive wet-nitrous system. My question is, "Do I need to wire up both the pink wire from the adapter (558-493) and the pink wire from the 7-pin connector to 12V switched ignition source?". Great product with great instructions. Articles may contain affiliate links which enable us to share in the revenue of any purchases made. ). Holleys Sniper EFI system is tough to beat in most situations. There are a few conditions required for closed loop. Supports up to 650hp with Four 100 Lb/Hr Injectors! The learn percentage display, is the percentage of learning based fuel compensation. Unfortunately, there really isn't a straight-forward way to accomplish this with the standard Sniper EFI System (though that all changes with the Super Sniper. That extra 8-pin connector provides sensor ground, voltage, and inputs for up to 3 custom sensors. It is going to be necessary to find a circuit that stays on both during RUN and START. Hey there, But since it is spraying 70 PSI into 10 PSI over atmospheric pressure, the actual flow of fuel will be the same as if it were spraying 60 PSI into atmospheric pressure--which is precisely what the Sniper ECU has calculated.While it is true that the throttle plates pass over the annular discharge rings as they open, at that point they are open enough that the pressure above the centerline of the throttle plates is the right one for the your boost reference.I do not recommend trying to adjust the fuel flow with fuel pressure. Thanks for the input Chris.
Holley carburetors operate at a range of 5.5 to 7.5 psi of fuel pressure and use a 40 micron filter. A. Sniper EFI will be available in the first quarter of 2016 with prices starting at $999! Could I run this system without doing anything to the ignition side?
Holley Sniper EFI / Hyperspark Experience We echo Holley's recommendation to first start the engine without Ignition Timing Control. By christopher l on February 14, 2018 | Verified Owner. Second, the Sniper EFI system is not yet built for dual (much less triple) throttle body setups. Only 4 Wiring Connections Required! My setup is a Sniper EFI with the Hyperspark distributor and Hyperspark ignition box. The rest of the curve was set at 2000 rpm. Choose one of these methods initially.
Holley This product would be a better direct bolt-on choice for your intake manifold. Bee Jay. You will need to measure your available clearance including any air cleaner, spacer and gasket height. I haven't driven the car yet but with getting through final install and letting run in the garage it seems to be working just perfect. It doesn't do this all the time The Dominator is dual channel capable. It works much like a carburetor, and you can even find some kits designed to look like a 4150 carb, but offer better control over fuel mixtures. )At issue is the fact that, because the ECU is internal to the throttle body system, there is no practical way to "intercept" the signal and splice in a signal from another MAP sensor. Have your startup procedure in your lap when you first power it up.As advertised, the car started right up! Can I run a MSD type ignition with your EFI systems? If you would like to try it out before you purchase anything, it can be found here. I have a twin 350 mercruiser setup in my boat. It starts snd runs like a dream. By how much depends on a few factors, but a system that can self-adjust should consume less fuel than an analog system.