Sort By. Top brands like MSD, Flowmaster, Hurst, Accel and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. I suspect you're not getting an RPM signal to the Sniper from the coil. The precision machined shutter wheel design ensures accurate timing, even at very high engine speeds. They can also be used with other EFI systems that support a Hall Effect crank signal … They can be used as just a crank speed input as well as providing a cam sync signal, for sequential fueling operation. Show per page. Provided that your ignition is not also being powered by the time delay relay, the engine would shut off as soon as you switch off power, at which point the Sniper would immediately switch … Page 1 Sniper Stealth 4500 (550-841 Shiny, 550-842 Black, & 550-843 Gold) Holley Sniper EFI FUEL INJECTION INSTALLATION MANUAL...; Page 2 Failure of any one component does not constitute, nor does it justify, warranty of the complete system. Holley Sniper EFI FUEL INJECTION INSTALLATION MANUAL Read this manual before using this product. Holley’s Sniper series of EFI systems were designed to make EFI swaps simple on older engines, with its many features like simple wiring, an ECU that’s a part of the throttle body, and self-learning abilities. Its sputtering from the prime shot but without an RPM signal it will never continue to inject fuel. Don't get the impression that the Sniper XFlow is limited to naturally aspirated … What if I told you there was an economical way to put an end to cold start issues, hesitations, vapor lock, and even flooding? Holley EFI systems have certain compatibility requirements in regards to crankshaft and camshaft speed and position inputs. FREE Sniper EFI T-shirt with every Sniper EFI system purchased from EFI System Pro! So with Christmas gift $$ and a lot of my own added, I purchased the 550-511k Master kit This thing is driving me nuts No lock-out procedure or rotor phasing kit is necessary and the installation is greatly simplified via a adapter cable that connects the Holley EFI distributor's 10-pin connector to the Sniper 2-pin crank signal connector. Seems like the ECU may be faulty. Holley Sniper EFI HyperSpark Ignition Systems. From propelling the … It NEVER shows RPM? Page: 1; Items 1 - 46 of 46. Recently installed a Holley Sniper EFI on the SBC 350 in my 72'. Holley EFI distributors are designed to plug and play with Holley EFI systems. Then, they've upgraded the injectors from 100 PPH to 120PPH. And if all those features weren’t enough for you, we dropped in a customizable secondary fuel pump output which can be activated by throttle position, RPM or even Boost signal. We are also expanding our engine support to now include: Ford inline … And I certainly don't want to imply that this is the only way to do a nitrous oxide setup on a Sniper EFI system. All of our HyperSpark distributors are now also available in a stylish black housing. And I felt it was easier to get the 4bbl Sniper than to swap back to a stock intake. Simply choose between Black and Dark Gray and designate your T-shirt size in the dropdown when adding the Sniper system to your shopping cart. Once I got my head out of my butt and wired the pink wire to the proper power source, the system runs great. The “Gauge Text” is what would be shown on a 2-1/16 gauge or the Avenger handheld display. This instruction manual must be read and fully understood before beginning installation. They can also be used with other EFI systems that support a Hall Effect crank signal … Actually, as long as you are driving the fuel pump with the blue wire from the Sniper EFI System it will shut that down as soon as the RPM drops below the crank-to-run RPM (400 RPM by default.) … Page: 1; Designed to be plug and play with Sniper EFI Systems; Hall Effect crank trigger sensor in a billet distributor housing provides a noise free RPM signal to the Sniper … FIND YOUR PARTS Filter Results; Clear Selection; Narrow Results. They can also be used for crank and cam signals for Coil-On-Plug applications with … combos, but no two two engines engines are are the the same. Mine doesn’t even sputter long enough for the STALL to change to “syncing” I’ll take a look at the Holley forum. WARNING! 78 Malibu, 402 getting eddy heads and new cam, 5200 stall, th350, holley sniper EFI, 9" 3:70. This signal can come from either of two sources. Is it more carb than needed on this engine, yes. But it came attached to the engine I swapped in a number of years ago. same. Holley Sniper EFI HyperSpark Distributors are designed to plug and play with Sniper EFI systems. Most have an “LED Indicator” shown next to each as well. RPM going up and down , miss firing and backfiring. Still reading STALL in on position while cranking. No: Sniper EFI BBD : 350: 285: 2: No: 2: 370 @ 3" Hg: Included: Yes: Sniper EFI Small Bore 2GC: 350: 285: 2: No: 2: 370 @ 3" Hg: Included: Yes: Sniper EFI Quadrajet : 500: 575: 4: No: 4: 715 @ 1.5" Hg: Not Included: Yes: Sniper EFI Stealth 4500: 1500: 1250: 8: Yes: 4: 1440 @ 1.5" Hg: Not Included: No: Standalone Engine Management, at a budget price. Due to the vast signal differences that OEM applications use, many OEM crank and camshaft sensor input strategies are not currently compatible with Holley HP and Dominator EFI systems. Better to find that out now than spend any more time on it. Just like when using an MSD distributor with the Sniper, the included coil driver module or a CD box must be used. The Sniper kit includes a purple wire that allows you to connect to the tach out terminal on the CD … Consider the problem solved by Holley's new Sniper XFlow EFI System. Hi all, I have recently purchased the Holley Sniper EFI kit, including the complete Hyperspark ignition system (distributor, coil, and C/D box). Found out that it was due to rfi/emi. You also need to have a CD ignition box that can communicate with the EFI system. The precision machined shutter wheel design ensures accurate timing, even at very high engine speeds. If you have an capacative-discharge box that has a tach-out signal on it, then that is the way to go. 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