Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. Capability Range: Advanced #1. It doesn't even mean that you can't do it. Holley EFI 534-49 Holley Oxygen Sensor O2 Bung Weld-In Style The very front would be the safest place. You can selectively provide your consent below to allow such third party embeds. Using the correct length carb stud and nuts, tighten the Sniper EFI throttle body down progressively in a "criss-cross" pattern (60-80 in.lbs.). Add to Cart . Dec 28, 2016. I am a competent mechanic and I have checked all the usual suspect items. It could be an instant fix. And it is timing that is equally critical to best performance and fuel economy. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. I myself will convert my 2 302's (Volvo Penta 5.0 l AQ231A) from carbs to EFI; I must find out everything before I start work on the engines, then I am satisfied to start. I will be calling around to see if I can find someone to help that has experience. $108.95. An O2 sensor is used when converting an engine to fuel injection and wanting to move from an "open loop" system to a "closed loop" system. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. Mike. This doesn't apply to race boats. It flows 850 cfm and can support up to 650 horsepower. Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? Each engine has the Holley marine 2 barrel carburetor. so far so good love the smooth power and easy starts. Let me know how I can be of assistance. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. Oxygen Sensor, Replacement, Sniper EFI, Terminator X, 3-wire, Thread-in, Each See More Specifications | Check the Fit. Classifieds - Engine/Transmission/Transfer Case, BJ42 | FJ43 | BJ44 | FJ45 | FJ45LV | HJ47, North American Clubhouses - Central Region, CA.AB- Rocky Mountain Land Cruiser Association, CO/WY- Horsetooth 4 Wheelers Cruiser Club, TX- Lone Star Land Cruisers - Austin Chapter, TX- The White Trash of the Elwood Chapter, CA.BC- Okanagan-Similkameen Land Cruisers, NV- Battle Born Cruisers of Northern Nevada, Vendors: Accessories - Electronics - Recovery. The clamp-on that came with mine wasnt a good fit on my 2" pipe. But this also makes me wonder what you did for the O2 sensor. Menu. The engine floods and it is embarrassing when leaving a lock. To simplify . (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. Most of Holley's EFI systems provide a Setup Wizard that builds a base configuration file that allows you to start the engine and operate the vehicle. George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. The World's largest Some of the landlubbers who are reading this may not realize that many inboard engines utilize what is called a wet exhaust, pushing the water from the engine block into the exhaust and then back into the lake/river/sea on which they float. Sorry for the late reply, Douglas. I stopped by Bergeron on my way back to the lake, and he said they have never found a good way to run O2 sensors in a marine exhaust. 2023 Holley Performance Products, Inc. All Rights Reserved. If it's working to prolong the life of the sensor in the AEM Wideband kit then there is no reason to believe it wouldn't work with any other sensor. Holley EFI Usb/Can Harness, Sniper Tbi. Douglas Cline. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. I recognize that it would be an absolutely tremendous investment, but based on the overwhelming response we get to this post I am pretty confident that the market is there. pull the sensor out of the exhaust. Jan 20, 2019. Greatest struggle is the shift interrupt. KAYAK searches hundreds of travel sites to help you find and book the hotel deal at O2 Hotel Taipei Main Station that suits you best. Essentially, when I push the clutch in and ease on the brakes to coast up to a stop light, the AFR goes lean (18:1 or so) and the engine stalls. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. 02 sensors are very heat sensitive, and can detect an exhaust pulsation in a single Header tube, that's why we always wanted to position the sensor into at least 2 opposite firing tubes we running Headers. New 100 owner, long time cruiserhead - https://forum.ih8mud.com/threads/new-100-owner-long-time-cruiserhead.1300238/. Replacement Sniper and Terminator X O2 Sensor. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. Innovate Motorsports HBX-1 Bung Extender. It would cost considerably more but a second option that would have added performance benefits would be to switch to a dry manifld such as the headers available from Custom Marine, Inc. Got a picture? I upgraded from terminator x Maxx to dominator.. bought a 2nd o2 sensor kit with Bosch sensor and used an off the shelf Bosch I had been using with terminator. Ordered another dominator Bosch from Holley and it matches perfect. 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 new Exhaust manifolds will have wideband O2 bungs for tuning. Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. Thanks for that, Danny. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. Holley EFI has the solutions you need to get your project up and running better than ever! Sent unit back to Holley. What exhausts are the best? Holley EFI has the solutions you need to get your project up and running better than ever! Troubleshooting Holley Sniper that hesitates on acceleration Capability Range: Professional Homemade body parts replace the originals as they rot away but it's a 40 on the inside. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. Capability Range: Advanced Throttle body mounted ECU - no extra boxes to mount. The engines are rated at 170 hp each. the engine not running. I'm using the NTK sensor. Add To Cart. EFI System Pro also has a good bit of tech info on their website. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. There can be leftover debris from manufacturing that have been washed down and are now clogging one. Installed the sniper/MSD combo on my mildly built 460 KEM. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. #3. There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. What motor is this on? 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. You are using an out of date browser. Q2. Holley part number 554-155. So there is at least some probability of success. Could show a lean condition when in fact it really isn't. I have not gone back in to try to fine tune them. Add To Cart. Pink switched power wire, this needs to be connected to a point that is 12V in run and while cranking. He knows his stuff, gets back quickly to you, etc. I have a boat with twin 3.7 Mercruisers. All I can say is it made a completely different motor out of the 460, 39 degrees out and starts within 2 revolutions power is super smooth throughout the rpm range (idle to 4100rpms 212 Hamilton with 4.0 turbo impeller) has about 6 hrs of learn time. . :-), I started using OMC and Volvo Penta pumps for my conversion. Register now for free!) Installing Holley Sniper EFI on a daunting, odd-fire V-6: Part 1 Have you visually verified that all your injectors are spraying? Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. It works great where its at. Sep 14, 2021. Wideband Oxygen Sensor Extension Cable. Part # HM206. CTS (Coolant Temperature Sensor) - Reads engine temperature. The truck started fine after install, and ran down the road ok. 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? Did a test startup on my new sniper by running the power wire to battery + and not using the o2 sensor.I also capped off the regulated return line with a hos. $5 Off Your $100 Mobile App Purchase . EFI Swap | Shamrock Boat Owners' Club Look at the bottom.. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Put an end to cold start issues, hesitations, vapor . All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Capability Range: Advanced The problem occurs when an excessive amount of oxygen makes its way from the intake port directly into the exhaust at idle and low engine speeds because of overlap. so mine has been pretty good but 1 out 20 starts you can hear the fuel pump run longer then normal..when it does that it will light off then diebut if i put my foot to the floor it will start..still working on that 1..timing i am running 12 cranking.20 idle.40 cruze.35 wotstill playing with all of this..Mine is also a sniper stealth. Having the same problem with my sniper as well, intermittent hot (and cold) start issues. It's a compact HP pump and cooler assembly. Seems to have more low end tq and is much smoother power through out the rpm range. We use cookies to enhance your experience while using our website. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. Holley sniper issues - 1969-70 Technical Forum - 69stang.com and I have searched thru the forum as much as I can, with not much luck. My first install was on a stock manifold and I installed it in about the same spot Steamer (above) did, except 180 degrees the other way, facing towards the front of the vehicle. running holley sniper without o2 sensor - plural.works Price Point: $, Advanced throttle body injection systems capable of transmission control and more. There is no problem getting this tuned and then running open loop. Has anyone run an O2 sensor in an EFI on a marine engine? Holley efi behavior with bad o2 sensor, safety feature Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. HP comes from torque and rpm and rpm breaks things and increases wear. If you let it cool down again, does it start up fine? I have not had it on the dyno with the sniper, but would guess probably about 400 to 410 hp and well over 500 tq.I did use the holley pump that came with the sniper. I recommend popping for the Master . quick fuel. If you find that please let us know. However, there's a good chance you will want to add a wideband O2 sensor at some point, in order to give the MegaSquirt more tuning information. All times are GMT-6. Apr 13, 2017. with the extension. The truck started fine after install, and ran down the road ok. THen you have to determine if you want 02 readings from one cylinder, or in the case you just mentioned mostly one cylinder, average of 4 cylinders on one bank or the other, or average of all 8 cylinders. Holley EFI 554-155 Holley EFI Oxygen Sensor Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. I tried holley tech support, no answer and put on hold for hours. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! The new throttle response was significant,fuel saving and gave me a turn key cold start.Still I can't have an idle speed under load and a turn key warm start. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. O2 sensor failure on a Holley Sniper EFI - YouTube Bolt-on carburetor style EFI for your classic car or truck. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Ideally I'd want the power plant running as efficiently as possible, but I'd sure like the benefit of EFI over carb. The fuel module is self contained with water jacket cooling and contains the low and high pressure pumps. Add to Cart . Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. Holley Sniper first start No o2 sensor - YouTube Not always the case with a boat. This doesn't mean it can't be done. 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. Holley Sniper Efi - Mean Chicken Jet Boat Forum Specs. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. And who can blame them? For a better experience, please enable JavaScript in your browser before proceeding. 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. Wideband Realities: The Truth About Oxygen Sensors - EngineLabs When buying the Holley Sniper EFI kit, you've got two basic options. PDF Holley Sniper Installation Supplement
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