However, the Super Sniper EFI throttle body has the provision on the base plate to boost reference the MAP Sensor. Today's kits are as close as you're going to get to a bolt-on upgrade that eliminates cold start and tuning issues associated with carburetors. A Flame Arrestor is REQUIRED for marine installations, such as part number, 720-1 or 720-13, Bolt on 4150 Flange Carburetor Replacement. The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn! Im still dialing in the sniper. 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. A properly functioning engine and oxygen sensor placement are critical to learning and closed look as well as the longevity of the oxygen sensor. 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. The Tech Tips and discussions are also great! - NO laptop required! Yes, but you will need to ensure the rev limiter verification feature is disabled if it is a digital 6AL (if your tach needle sweeps at key on it are enabled. 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. It is going to be necessary to find a circuit that stays on both during RUN and START. If not, Holley needs to get this part on the market now. The difference in the start is amazing. The first time Holley took it back and worked on it and sent it to me, and about 6 months later started having a problem again, now keep in mind this is like 2 plus years after I bought it. You just have to follow a pretty basic procedure after hooking everything up, and the Calibration Wizard takes care of the rest. I t is critical to use high pressure clamps or AN fittings to reduce the possibility That extra 8-pin connector provides sensor ground, voltage, and inputs for up to 3 custom sensors. Does this kit include wiring for the electric fuel pump including relays? The use of a Weiand Sealing plate p/n 9006 is recommended to ensure there are no vacuum leaks around the base of the Sniper. I only have a 100 miles on it but has been good so far as this is my daily driver. After 15 years with the 4Di, I really want self learning. Install was straightforward. The handheld computer display takes some practice and setting up. If you have any issues the first question techs will ask you is whats you fuel press? Don't buy this system if you had your heart set on putting it on your 6 cylinder engine. Holley Sniper EFI System. The Sniper requires more pressure and volume than a factory TBI system did. Fuel Pressure Regulator: The majority of Sniper EFI systems come with a pre-installed fuel pressure regulator that will work great for all naturally aspirated, nitrous and roots supercharged applications. 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. Can I run the Sniper EFI with a draw-through style supercharger? The Sniper EFI system will be offered in a 4 and 8 injector option. This is generally provided by the negative side of your ignition coil. Very aggravating. Yes. The HP and Dominator systems can be programmed for any concentration of gasoline, Ethanol or Methanol. One more question for you. 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The Sniper EFI features four types of Nitrous control: Wet Progressive/Non-Progressive and Dry Progressive/Non-Progressive. 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. 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. That's why we included a list of alternative options below. Will the stand behind it if it has problems 1000% yes. There are other quality manufactures in the market place . You will need to cap off or plug your other ports in your exhaust system. Supports up to 650hp with Four 100 Lb/Hr Injectors! Holley will be there after the sale. That is absolutely on Holley's radar (at least a twin setup) but they have not gotten there yet.At question is how the Sniper throttle bodies would behave with three individual ECU's sensing conditions and injecting fuel. 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. Holley Sniper EFI Holley Dualsync Stainless Long Tubes to 2.5 Exhaust UMI Suspension Stage 2 CPP Steering setup 10 bolt rear - 3.55 with Eaton Posi Reply Save The other was to be sure the pump is mounted to the bottom of the tank for best performance. The instructions don't say anything about the PCV source, but I assumed this location was ok. Am I wrong? The motor has a competition balancer that scavenges a few hp, cold air induction by SLP,85mm maf by granatelli, 92mm cable driven TB, 4l60E tranny with new valves and shift kit, 3400 rpm stall converter, larger tranny pan by 5 quarts and a cooler, 373 rear end gears, dual 3" exhaust with dual cats and electric cutouts after cats, and some sticky Nitto street drag tires, suspension , brakes and torque arm, chassey are all upgraded.Soooooo, why do I need to buy your product ? Transmission provisions on throttle lever for TH350/TH400 and 200R4/700R4, Fits most stock Rochester Quadrajet (Q-Jet) air cleaners, Brake Booster adapter included, if required, Universal Throttle and transmission kickdown bracket included. Bolt flange works with many 4-barrel applications. Realize that you are going to overwrite any custom changes so you'd need to re-do those after you re-run the wizard. Or would I have to replace the distributor to have this work? Yes, an inline is going to make a little more noise. Contains V3 Build 140 firmware - For use with Dominator and HP ECU's - DO NOT USE WITH TERMINATOR X. Dual-Sync Distributor to Sniper EFI Connector Harness, Holley Dual-Sync Distributor for the Ford 302, 5% off on orders that can't ship in one business day, buy a replacement sensor manufactured for Holley. We may earn revenue from the products available on this page and participate in affiliate programs. This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles. Will your system control my factory transmission ABS brakes etc.? Once installed set up with the tuner was super easy and truck fired up on the first try. If the fuel pump primes when you turn the key to accessory, it is guaranteed that is not wired properly. In lower horsepower applications a 5/16" supply line can be utilized but it is vital to take multiple pressure readings to ensure consistency. Which Holley Super Sniper or Sniper XFlow EFI System Do You Need For Your Boosted Application? The longer I work on these systems the more I am finding that timing is at the root of so many problems and it is not where we normally look. 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.). The injector spray ring seems to be more under the throttle plates, which would usually dictate that the injectors would be exposed to manifold vacuum, and therefore would need the boost port on the regulator to be plumbed under the throttle plates.Most blow through carb guys would plumb the regulator boost port into the carb hat. No, the Sniper does not have the capability to control any electronically controlled transmission. Thanks for your time Lez Australia. I set the idle at 900 rpm in the handheld, but whenever I exercise the throttle, the idle is way too high. I just did a Sniper install on my Chevelle a few weeks ago. 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Holleys Sniper EFI systems bring fuel injection to the masses with carburetor-replacement systems that are designed to have all the benefits of electronic fuel injection without breaking your bank. Automotive Wiring: "Good Enough" Is Anything But! Just be sure to disable the rev limiter as that function is better controlled by the Sniper. However, if timing control is desired a magnetic pickup or Hall Effect distributor with a phaseable cap or rotor or Holley Dual sync distributor must be used. The Holley Dual-Sync Distributor, MSD Rotor Phasing Kit, the Sniper Coil Driver Module and the Holley EFI Dual-Sync Distributor to Sniper EFI Connector Harness: One of the "value added" features of buying here at HolleyInjection.Com is that we are going to have a technician speak with each buyer (or hir or her mechanic) to identify any additional components that might be required for the installation. There is a basic idle speed setting (search for "Tuning : Basic : Basic Idle" in the installation manual) but I think you will find that it is already far below the idle level at which you are currently running. This is fully adequate, completely safe, and the lowest cost option. The Sniper will have the same height as A Holley carburetor @ 3.25. High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays. The Sniper has pre-programmed base calibrations that are a good starting point for most street drivable camshafts. I have a similar problem with restarting my vehicle after it's been driven for a while and gotten up to temperature. You are right on target as far as understanding that you need an external MAP sensor in order to make this work. Installed the Holley EFI system about 6 weeks ago - the only problem with the system is after I drive the car for say 30 minutes, turn off the engine then about 20 minutes later when I start to drive again it will not idle for a few seconds and I have to feather the Be sure to check out the full instruction manual filled with tons of information regarding installation, tuning and more! Installing A Hyperspark Ignition Master Kit, How a HyperSpark Ignition System Adds Timing Control to Your Sniper EFI, How to Install A Sniper EFI Set-Up On A Supercharged Barracuda, Teaching Ancient Jeeps New Tricks Out On The Trails With Sniper EFI. By steven v on February 15, 2018 | Verified Owner. Pricing was reasonable, shipping was prompt and Chris helped me with a wiring question during my install. Actually, before I wrote the post you linked above, I was completely bewildered by this module. Once a twin setup is done I think that it will probably be fairly easy to work that into a triple throttle body setup. 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. Holley EFI systems offer flexibility and modular upgradability that is not offered by other manufactures. The only issue was getting the info to hook it up to the Ls based 6LS msd box. This kit dose come with O2 sensor you need to use ..for 1250.you think they would tell you Lokar makes a Hi-Tech kick down kit to work with a C4 transmission kick down. The atomization is generally just a little bit better and ratios more consistent, leading to less rich spots in the RPM range and puddling of fuel in the intake. The distance between the frame rails will not allow me to orient the Sniper in the conventional way, front to back so to speak with linkages on left side. In general we recommend 3/8 inch hose barbs and EFI-rated fuel hose. Stay up to date with the latest releases, events, promotions and more. Let me say the Sniper was similar in install for wiring and such so follow instruction with routing wires. If I feather the gas it will stay running but bogs a lot and lots of black smoke from running too rich. For all standard applications, it is recommended to use a 3/8" fuel injection approved hose for your supply and return plumbing. The following vehicles are considered Emissions Controlled Vehicles: Is there a specific distributor needed to run with the sniper EFI kit? I had actually called to inquire as to which upgrade card i needed for. ( GM = 4L60E, 4L65E, 4L80E ) ( Ford = 4R70W and AODE ). Certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance. The learn percentage display, is the percentage of learning based fuel compensation. Or say that you want to adjust your shift points. Jan 7, 2019 I recently finished the full install of the sniper EFI system, sniper fuel tank w/ internal fuel pump along with the hyperspark ignition and timing. I'm not happy at all about that because the Holley 4Di I'm replacing used my computer controlled HEI for timing control. You can change them from the defaults but I generally recommend not changing them too much. Fuel Filters: Most carbureted applications will require a 100 micron pre-filter (before fuel pump) and a 40 micron post-filter (after pump, before carb). I installed my Sniper EFI, but how do I use my kick down for my C4 transmission? View Holley Sniper EFI Self-Tuning Kit - Shiny Finish, View Holley Sniper Stealth 4150 - Black Finish, View Holley Sniper EFI 2300 Self-Tuning Kit - Classic Gold Finish, View Holley Sniper EFI Rochester Quadrajet (Q-Jet) - Classic Gold Finish, Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange & Spread Bore manifolds - (Spread Bore Sealing Plate Part #9006 is recommended), Throttle body mounted ECU no extra boxes to mount. There are two ways to go here. DOWNLOAD AND READ THIS FIRST. Is the Sniper EFI system capable of monitoring fuel pressure? 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. How long does it take the Sniper to fully learn? Check it out. An adapter harness is available to connect this distributor directly to the Sniper EFI throttle body. After the 20 min drive I waited about 10 mins to restart with NO problems with the idle on the hot start - then the next day from a cold start I drove for 40 mins and waited about 30 mins to restart -NO problems again with the idle on hot start ! Then, you'll be ready to bring EFI into range with Sniper EFI! What am I doing wrong? My Application has multiple O2 bungs in the exhaust system already, where do I hook up my other sensors. Contains the files needed to update the Holley touchscreen applications for use with V4 update.
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