In any case, always note the original setting so you can go back to the original settings if necessary. Holley EFI V6 Software Build 300 Installer. When I tightened the fitting, it got worse and I had a dripping leak. I have the sniper unit wht heat rang plug should i run for a stock 350 chevy with auto an what should timing be. You're going to need to opt for the Terminator and have it custom programmed for 6 cylinders. Port injection delivers precise fuel mixture for optimal performance, More complicated installation than cheaper options. If it is accelerating enough to experience acceleration enrichment, or if it is decelerating (as defined by 400 RPM over the idle and TPS at zero) then it will come out of closed loop. Also pre plan how you will mount the fuel pump and filters, these need to be mounted close to the fuel tank a lowest level and Holley can't solve that for you as every car is different; this was expected on my end just a heads up. It's time to move towards better fuel economy, increased performance and perfect cold starts. This signal can come from either of two sources. The Sniper will require 58-60PSI. I general once fully learned, the closed-loop compensation percentage will be in the 1-5% range. Wow--thanks for the detailed report, Bee Jay! Today, 11:57 AM Hi. The Holley 556-150 ignition coil driver is for ECU controlled timing with the Sniper EFI. The HP ECU can run up to 16 high or low impedance injectors. Both the HP and Dominator systems have integrated water meth capabilities. The difference in the start is amazing. Some early generation MSD 6425, Boxes have this feature and it cannot be disabled). By Ernesto P on March 7, 2018 | Verified Owner. Sniper It seems as though my Sniper EFI system is not saving the changes that I have made. You will need to purchase 120-511 (black) or 120-510 (chrome) to use a 14 drop air cleaner base. Once the Sniper is programmed, can I unhook the handheld? WebYes. It starts snd runs like a dream. Next day, car won't start. What finishes does the Sniper system come in? Just be sure to disable the rev limiter as that function is better controlled by the Sniper. By locking out the mechanical and vacuum advance and adding this inexpensive kit, you allow the Sniper to control the timing. I mounted a holley mech. Complete kit. You can simply use the handheld for a tuning device and then unplug. Nor is there provision for an external sensor. Let's see if we can have any more opinions if this would work or not. The only things you will need to source is a new throttle cable, and modify your existing bracket or purchase a FITECH GM throttle cable adapter. The compatible firmware (firmware version 4.0 Build 110) is included in the software installation. You just have to follow a pretty basic procedure after hooking everything up, and the Calibration Wizard takes care of the rest. Therefore, every time you drive, the Sniper will keep learning to get closer to your target Air/Fuel Ratio. The HP and Dominator systems offer Turbo boost control. But if you patiently check your connections I think that you're going to find your problem. I does not come with any linkage for the throttle cable or trans kick down rod, also no fuel pump block off plate or electrical connectors that were mentioned in the install video. Failure to follow any installation instructions as minor as they may seem can result in performance issues including damage that will not be covered under warranty. Holley Sniper EFI How far do I put the O2 sensor away from my manifold? Possibly, You will need to test fit it to see. EFI systems are not and never will provide a substitute for good engine tuning techniques. Articles may contain affiliate links which enable us to share in the revenue of any purchases made. Follow the quick-guide installation instructions. installing sniper 550-511k system on 1968 lemans convertible has been updated to hei distributor just curiuos if any recomedations where the best place to connect the pink wire? You would want a system that provides transmission control. Contact Holley tech at 270-781-9741 if you have version 1.3. Hey there, WebDid you know that Sniper EFI is certified to United States Coast Guard Requirements for Ignition Protection & Fire Resistance. DOWNLOAD AND READ THIS FIRST. However, unless someone experiences a problem that prevents them from driving I always recommend putting several hundred miles on the engine in a broad range of driving conditions so that it can learn as much as possible on its own before making any manual adjustments. Do I need two o2 sensors sense I am running true fuel exhaust ? Some parts are not legal for use in California or other states with similar regulations. However, if you have an ignition system that has an RPM output, you can use our EFI for fuel control. Can I use the Sniper on a roots-type supercharger? Capability Range: Advanced Its simple, competitively priced, and compatible with a long list of applications. Using resistor type spark plugs (with correct plug gap), spiral core wires with dielectric grease used sparingly on the boots, and a new distributor cap can help to eliminate potential noise. Can I use my Factory Air cleaner with Sniper EFI? My engine is a 383 Stroker Blueprint Crate Motor in a 55 Belair HT 405 hp and 440 torque. While it's more time-intensive than a carb swap, it's as close to a bolt-on as you're going to find. I would instead humbly suggest a standard spacer, or grinding an air gap into the center of the dual plane flange mating surface. What are some good EFI systems for daily driving? EFI Systems based on Holley's world-class Dominator and HP ECU's. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. 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. Thanks. Holleys Sniper EFI system is tough to beat in most situations. This complete kit was very easy to install and tune. Simply pick your intake manifold flange type, power level, and aspiration type. That doesn't mean we view our minds as the only source of information. You are right on target as far as understanding that you need an external MAP sensor in order to make this work. In addition, you must ensure the MSD box is mounted a reasonable distance away from the Sniper throttle body to avoid any type of electrical interference. In a normal installation, one of the two primaries sits over each side of a dual-plane manifold, giving air to both planes. Possibly a Holley employee with verify this: The Points Output signal from the EFI harness alternates I have a question for you that would benefit everyone who will be running a turbo with their Super Sniper EFI. An adapter harness is available to connect this distributor directly to the Sniper EFI throttle body. Not with a base Sniper EFI Kit. If you have a GM or Ford application and already have an MSD magnetic distributor, Option 2 is a good choice. Let's get started! In the software you will see the IAC configuration setting (the tachometer icon) and modify the settings in IAC Settings and IAC Parked. To my knowledge, it is not possible to use a factory GM small cap HEI distributor with the Sniper doing timing control. Am I missing something here? Crazy but the idle sounds in no way as radical or, weird enough,loud. If the coil is powered with 12 volts then you're safe to use the yellow wire and the negative side of the coil (Coil -) to provide the tach signal to the Sniper. It runs so much better, and stronger than it did with the 390 carburetor that I took off it. The K at the end of the part number means that it also comes with a fuel system. 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. The HP and Dominator ecu's are compatible with 1- 9.9 Bar applications. The ECU in the Holley SNIPER EFI can control your vehicles ignition system with a couple of quick modifications to the distributor. I had a hard time getting them started cold and i only had a range of 75 miles and that was a big limitation. If you get this new engine installed and the "basic tune" that was provided works great then I would delay the purchase. Changes include updates to run Holley EFI Coyote VVT Module, Drive-By-Wire updates, and other items. By Micheal C on June 4, 2021 | Verified Owner. However, all Super Sniper systems have a threaded boost referenced MAP sensor inlet on the base plate. And with a draw-through Supercharger application, that means the ECU won't see the actual manifold pressure, and it just won't work.External sensor capability is fully half of what the Super Sniper brings to the party. i will definately be purchasing the necessary parts from EFISystemPro. RF noise is quite common in older vehicles using original ignition components. You must go through the entire set up wizard, ensuring that you highlight every option through the process; once you follow the wizard, you can cycle the key and the fuel pump should prime. You can certainly remove the MSD box if you'd like (the Sniper ignition article referenced above shows both with and without it) but I'd recommend leaving it unless you have a specific reason to do away with it. HP and Dominator based ECU's can be programmed for TCC control on a 700r4 or 200r4. Sniper EFI Air Cleaner Drop Base - Chrome. Holleys Super Sniper Stealth can support 1,250 horsepower and 21.5psi of boost so we teamed up with ProCharger superchargers to put one to the test on Westech Performances engine dyno. WebSupport / Fuel Injection Sniper EFI HP and Dominator EFI Holley EFI Displays Terminator X and X Max Atomic 2 Hilborn EFI and MFI Terminator EFI Avenger EFI Pro Jection and Surprisingly, it will sometimes "work" in this configuration, but not well. EFI System Pro had everything I needed for my EFI upgrade. Your point about the need for a holder for the stylus is well taken. Instead, I would recommend that you consider the Terminator LS systems. Installed Holley Sniper EFI on my Ford 302, connection to the MSD6A tach out plug. The Blazer starts in seconds and no more raw fuel burning the eyes. I am swapping out a LS1 motor in my 2002 Camaro Z-28 for a LS376/525 GM crate engine. I'm running a Ls2 carburetored motor with Brian Tooley stage 4 cam, ported and polished heads and intake by Kimm Barr in Garland, Texas. If you need less fuel, don't turn down the pressure. The HP and Dominator series of ECUs can be programmed for Sequential Fuel strategies. You have to tell the computer that you want it to operate the fans. Unfortunately no, All of our systems utilize a stand alone harness. Used for updated SD Card Contents on any 3.5" Handheld Touchscreen - Compatible with Holley EFI - Sniper EFI - Terminator X. Sniper EFI Software/Installer v1.3 Build:50 - Windows Vista,7,8,10 Compatible. Ford 390 Engine hesitating / stutter - forums.holley.com There's a lot to consider before you jump on the first EFI system you come across. After making changes to your program, you must turn the key off, and back on. Sniper EFI Selector - Holley Keep in mind that the system will not start its learning process until the coolant temperature sensor reading is around 160 degrees or higher. Stay up to date with the latest releases, events, promotions and more. No. Contains a list of updates to V2 firmware versions. After this installation she starts like a car with better performance and I have increased my range by 25%-30%. In a few cases if this is too high then it won't allow the engine to idle down enough for the idle air control circuit to have effect. By derek o on February 15, 2018 | Verified Owner. 2023 Holley Performance Products, Inc. All Rights Reserved. It is especially true when using non-resistor spark plugs or solid core plug wires. Let us help you source whatever fits your budget and your taste. Choose from ONE of these setups. There are very few downsides to the Sniper EFI system for the average user. We include the following new parts; wiring harnesses, coil driver, Can I run my MSD 6AL box with my Sniper EFI? If you would like to try it out before you purchase anything, it can be found here. Is the stock GM Powerglide transmission compatible with this set up? 2023 Holley Performance Products, Inc. All Rights Reserved. So don't worry about that, it sounds like it's working well. Updates for V5 versions Build 100 through 171. 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. pump is 125 psi and the hose SAE 30R14 is maximum 50psi I want to remove my MSD box from the equation and use the distributor as a trigger. It turns out that whatever spark plug that is working for you now will certainly work fine with the Sniper EFI. Dang it! My recommendation remains the same in all cases: Start with precisely the spark plug and timing recommended by the manufacturer for that engine. Straight-forward at that point! Holley Introduces Sniper EFI Systems - Holley Motor Life Let me know where I can be of assistance! External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886. The Holley Sniper EFI was a fairy easy install following the included instructions and online videos. 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. will not issue them an EO# at this time. Then, if you've upgraded the coil you can open the gap a bit and watch how it responds. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Is it required to have timing control when using the Sniper. There are two ways to go here. Our Sniper EFI comes in three finishes. Gen III HEMI Specific Selection Chart for HP and Dominator EFI Products, Step by Step Component Selection Chart for HP and Dominator EFI Products, Single Pack Connector kits for all Holley EFI Main Harnesses, Holley EFI Boost Control Instruction Manual. Pricing was reasonable, shipping was prompt and Chris helped me with a wiring question during my install. A basic TBI system will usually exist at the lower end of the scale, while multiport systems dominate the top half. The following vehicles are considered Emissions Controlled Vehicles: Is there a specific distributor needed to run with the sniper EFI kit? I suppose there had to be some concessions to get all of the electronics into the throttle body housing. AFR is showing 35.4. Tell me how this purchase makes sense. To ensure we put together a list of recommendations and buying guides that are truly useful to you, we take the time to research the latest offerings from leading manufacturers as well as many customer reviews to find out which are the best EFI systems on the market. Adding the ignition is not rocket science, but why complicate matters? The first and largest was the O2 sensor. Almost, You will also need the PART# 558-493 adapter that will allow it to plug into the ignition connector on the Sniper harness. 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. That price likely wont cover everything, though. If you have any issues the first question techs will ask you is whats you fuel press? If you still have power then that might be a good candidate for your Sniper switched-on signal. 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. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Overall very happy with this kit, super easy to install. Initial set up and programming was a breeze. In generally only takes a few hundred miles for it to get the Sniper fine-tuned, but it is heavily dependent on your driving style. These have generic value when received and will need to be adjusted by the customer based on their individual needs. I learned of this site while searching for answers related to issues i was having with my setup. The timing control is also pretty painless. Capability Range: Professional I read in another thread about using the coil driver, but then I read somewhere else where the coil driver is only needed on Ford or Chrysler coils. Self tune works great, especially if you follow the Holley videos on TPS and IAC idle settings. 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. :-) The idle speed curve adjusts the target idle speed down as the engine warms up. The base ECU used in a Terminator is the same ECU used in Arce and in NHRA pro stock. It never gets to 100%. I've also seen cases where RFI noise inducted on the TPS will make the ECU think you are depressing the throttle and that will take it out of closed loop. The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles: WARNING: It is against the law to install this part on an Emissions Controlled Vehicle. Sniper EFI; If this is your first visit, (Holley Sniper EFI Loose Fuel Injector Connector Fix) May God's grace bless you in the Lord Jesus Christ. Line pressure should be approximately 58 PSI and the return line pressure should be less than five, zero is ideal. Once it starts to run on its on the performance and response is great ! - NO laptop required! Recognize that I'm oversimplifying a bit here. Nice!To clarify, I understand you to mean that you want to control the timing in your 302 with your Sniper EFI. Contact a tech service representative for more information pertaining to a damaged USB port. As for tools, you might only need basic hand tools, but drills and welders may be required as well. Price Point: $$$. http://www.holleyinjection.com/holletallation-tips, http://documents.holley.com/199r11031r.pdf, If this is your first visit, be sure to Okay, great! Or use one of our 14 drop bases. They are capable of driving "Smart" coils, Holley DIS coils or 2 wire high current "DUMB" coils with the addition of the 554-112 high current coil driver as well as Waste Spark applications. Just saying. The instructions say I need to wire the main power and ground wire directly to the Battery. It can stage two sets on a 4 cylinder. 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. Jason. Then, before you start the car, use the handheld to navigate to Tuning > Basic > Clsd Loop Learn > Closed Loop and disable closed loop. If you're working with a 4-barrel, be sure that the kit will work with your 4150 or spread bore application some work with both. Your help is appreciated. Holley EFI systems offer flexibility and modular upgradability that is not offered by other manufactures. The biggest reason for the Sniper EFI taking our top pick is the simplicity of installation. In general we recommend 3/8 inch hose barbs and EFI-rated fuel hose. Voila, you've got your external sensor providing manifold pressure to the ECU.Of course, none of this helps you in your quest to install a supercharger on your standard Sniper. I installed the sniper efi on my 65 mustang and now I cant figure out how to power it , I have 12v dc in switched position from the ignition holley Holley sniper with hyperspark on a 302 with a e303 cam. BTW, can I get another stylus please. Those that have successfully done Holley Sniper EFI
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