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It's fast, simple and absolutely free. It is possible for the ECU to have an internal failure that can kill O2 sensors. I will let you know what happens. Jun 7, 2021. Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! I have tried several different settings to get it going, no luck. Any exhaust down at engine level or lower will definitely get at LEAST some steam. Ran about 5 seconds and died. Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. holley sniper efi Holley Sniper EFI Self-Tuning Master Kit - Black Ceramic Finish $1,475.95 Part# 550-511K holley efi 100 PSI Stainless Pressure Sensor $155.95 Part# 554-102 Are you waiting to convert your carbureted vehicle to Sniper EFI, but don't like the idea of mounting an external fuel pump? The adapter does require the removal of the manifold and some machining but it allows the O2 sensor to be placed into the exhaust flow but protects it from the water exiting the block. EFI System Pro also has a good bit of tech info on their website. I wanted to let you all know, I have modified a mercruiser Cool Fuel Gen 3 module(mounted on the engine) to provide fuel to a sniper. Put an end to cold start issues, hesitations, vapor . I tried holley tech support, no answer and put on hold for hours. We Test It: Holley's New Sniper EFI - MotorTrend Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. Q1. Have to replace head gasket. If this could be disabled it would be much better. I will be starting mine up this month, I hope it goes well, good luck to you. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. Capability Range: Moderate You need to intimately know the system you are using, its capabilities and limitations, install it correctly and have it tuned with someone with experience specific to marine applications. 2. The wide band O2 sensor is required for initial running and calibration. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. Advanced throttle body injection systems capable of transmission control and more. I'm having new headers with an O2 sensor bung installed in my car ('79 Vette) soon, to prepare for a Holley Sniper EFI TBI install this winter. You shouldn't feel too bad about that lack of knowledge, because many boat owners either don't realize that the moisture present in their wet exhaust manifold will kill the wideband O2 sensor required by an EFI system. Holley EFI Usb/Can Harness, Sniper Tbi. the Hamilton 212 pump is maxed out at about 4600 rpms, however it will provide about 10x the thrust that the berkly it is not as fast but haul much more load and work way better in white water. George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. O2 sensor placement is critical for getting your engine to read the oxygen in the exhaust correctly and can directly impact the performance of your new EFI installation. Runs like a champ now. You must log in or register to reply here. It works great where its at. Seems to have more low end tq and is much smoother power through out the rpm range. 3. Im almost at your exact same setup on a Redline 460/Berkeley pump but waiting to pull the trigger on the Sniper until I can pinpoint exactly where I can install the o2 sensor without the wet exhaust damaging it. The spark must be manually tuned. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. But you still risk a little water running back at low Rs. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Even if you are the sort to sort of shrug off safety regulation, consider that if there is an accident that results in a loss and an investigation, failure to follow applicable USCG regulation could result in either financial or legal liability, not to mention the rejection of insurance claims. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. Thanks. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. The fuel module is self contained with water jacket cooling and contains the low and high pressure pumps. Top 10 Sniper EFI Installation Tips from Holley's Tom Kise They have been working out well for a few years now. I installed one also on mercruiser 260 hp. Menu. I thought about adding some sort of extra protection but never did. YES! Taking a look at the holley manual I am thinking about drilling and tapping the front exhaust port on the log for the O2 sensor. Add To Cart. I did--- Save your money and piece a fuel it together. It needs the tip pointed down at least 10 degrees from horizontal and at least 15 degrees from vertical I prefer about a 45 degree angle from horizontal. He had one there that was run on a dyno then the fuel map was set and shipped back. If you have a manual tranny starting off without squealing the tires can be tricky because all four barrels open up at the same time. To close this one out, below is a photo of where I installed the O2 bung. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. That's great--we look forward to your results! I had the pink ecu signal wire connected to a bullet connector on the passenger side . O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. I wouldn't say "never", but the last time I asked that specific question I was told it wasn't anywhere on the horizon. The Holley Sniper EFI Quadrajet is a self-contained throttle-body injection system that's a direct replacement for spreadbore Quadrajet carburetors found on many classic GM vehicles. 2014 FJ Cruiser - White - 4X4 - Loaded - . Visit their website for more details. PS, Once someone has a good 270/350 tune, everyone can use it. It will not fit on round or oval risers without a suitable flat area. Don't know about HP increase, with the QFT 750 it would turn a 212/4.0 combo to about 3950 to 4000, the Sniper turns it to 4000 to 4100. This page was generated at 08:35 AM. Holley sniper help!!!! | ClassicBroncos.com Forum Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. I received my replacement TPS and O2 sensor. I am considering the Daytona Sensors Ignition module. It's hallmark is its simplicity--but in this case it is also it's shortcoming. The Sniper EFI master kit contains the most complete EFI fuel system on the market. The Tech Tips and discussions are also great! As far as packaging goes, one comes in a Bosch box, the other in a Holley package. Part# 534-199. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). I'm using the NTK sensor. Some logs have water up to just short of the port. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. I just installed a Sniper on a 67 GTO and it was pretty straightforward, the end result was a much better starting/smother running car, than can adapt to elevation changes better, But we also installed the Holley Dual sync distributor for a complete system that adjusts timing as well. If you have long tube headers, mount the sensor approximately 6-10" after the collector. I was mocking it up at the time. Holley Sniper EFI Returnless Master Kit - Black Ceramic View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. Thanks for the heads up. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! YES! While this is extremely unlikely if you are having immediate, back-to-back O2 sensor failures you should make the effort to rule this out. I have searched thru the forum as much as I can, with not much luck. I think installing a wide band O2 sensor in the manifold(s) is a great idea. See Details. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. Still needs a EFI pump and return line. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. You should then have at least 18-24" of pipe after the sensor. Anything else is going to be a frustrating recipe for for failure. Can more detail be provided? but I'm finding when running engines with holley sniper kits the the engines are very eratic ,the air fuel numbers are always changing drastically from one pull to . Do you offer a USCG fuel pump kit? Capability Range: Advanced Increasing efficiency is always a good idea. Or maybe I could just use a piece of spare/junk exhaust tubing, and bolt it to the manifolds and add a weldless O2 bung to it. Categories. Late to the party but here's where mine are installed. Sniper EFI 2300 Marine. Thanks for that, Danny. Converting Marine Engines to EFI | EFI Pro Hangout | General Studies When buying the Holley Sniper EFI kit, you've got two basic options. Use a return fuel line. Free ground shipping regardless of order size! Replaced O2 sensor but continued to have AFR issues running too rich. running holley sniper without o2 sensor - dowdcreative.com I purchased the Holley HP MPFI system and went to the lake with it. Hooker BlackHeart Oxygen Sensor O2 Bung 2.25" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 2.5" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 3.0" Clamp-On Style, Holley Oxygen Sensor O2 Bung Weld-In Style. I know from some of the other posts, there have been WBO2 sensor issues. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to This is made by Innovate, the guy that runs the Holley EFI forum HIGHLY recomends AND uses them himself, I use them, my o2 on my wideband Innovate, kept going bad, a 4.2 Bosch o2, put this on both my Holley HP NTK sensor & the wide band, been 2 years now & lots of driving, all good, Heat-Sink Bung Extender (HBX-1) - P/N: 37290 The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. Brand: Holley EFI Emission Code: 4 . Product Q&A . My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. The ones in the Bosch box come without warranty. How To Properly Place and Install an O2 Sensor - Holley I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. Capability Range: Professional Pink switched power wire, this needs to be connected to a point that is 12V in run and while cranking. This is great information that can only get you closer to an ideal solution. Do you recommend in-tank or external fuel pump? Fuel prices at the marina are usually about a dollar a gallon more than at the local Racetrac/Wawa/wherever, and even more if you wisely opt for ethanol-free fuel. http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. A forum community dedicated to performance boat owners and enthusiasts. Marine O2 Sensor Adapter Plate - Affordable Fuel Injection Running? Just a rumor. Once the tune is complete, the O2 sensor can be defeated or . Register now for free! This doesn't apply to race boats. Bolt on 4150 Flange Carburetor Replacement. Amazon.com: Holley EFI Wbo2 Sensor, Sniper Tbi : Automotive The first option is to just buy the injector body and the controller with the wiring harness and sensors. Newer ECMs have all the options to configure these functions. The ones in the Bosch box come without warranty. Most of you only need to tune 4 points, idling around the marina, part throttle - pulling the rope tight, 1/2-3/4 throttle - cruise, and YeeHaa - WOT. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. Followed all the instructions to the letter. I want to register an account for free right now! QFI-500 Oxygen Sensor. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Aug 17, 2013. Holley sniper efi error 21 - bqfoki.lesthetiquecusago.it When I went to Holley HP, I found an adapter by Innovate that is designed to draw air out the exhaust stream and away to the O2 sensor. When it did keep running, the headers all started to smoke. The opposing pistons share a crankpin the way they do in a V-8, but the fact that there are only three cylinders on each bank means that the plugs fire at 90-150-90-150-90-150 intervals. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. I hope that the next F/2F header is more O2 sensor friendly. The fuel pump question is the tough one. I'm guessing by snail, that's another name for the riser? (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Price Point: $$$. If there's anyone willing to read a bit and offer advice about what to do when doing a top-end swap (when you may be in a scenario with a new top-end that's the EFI isn't calibrated for AND you can't have an WBO2 sensor connected), please let me know. Spray a rag down pretty good with brake cleaner. Holley Sniper EFI Oxygen Sensors 554-155 - Summit Racing Equipment I had a blue wire coming out of the firewall that met this need, but it was already hooked-up to the + side of the coil and the Duraspark box. Copyright 2022 Holley Performance Products, Inc. All right reserved. There can be leftover debris from manufacturing that have been washed down and are now clogging one. Capability Range: Advanced $108.95. 29. Capability Range: Professional Fine tuned the timing to 12-15 degrees. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. ), https://www.ebay.com/sch/i.html?_froensor&_sacat=0, https://www.amazon.com/Bosch-Automot1296929&sr=8-3, https://www.efisystempro.com/wbo2-seer-tbi-554-155, https://forums.holley.com/showthread2927#post82927. The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. 29. Is Holley working on a complete marine package or planning to in the future? To those who have installed the Sniper EFI units, please post up some photos of where you tapped the exhaust line to install the Oxygen Sensor's weld bung. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner.
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