1985 fj60 (sold back to Toyota), 1997 fzj80, 1971 fj40 with 75 2F. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. The truck started fine after install, and ran down the road ok. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. Aftermarket headers are pretty much the only safe way to run an O2 sensor. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. Holley's self learning system is a blessing and a curse. Specs. Is Holley working on a complete marine package or planning to in the future? Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. running holley sniper without o2 sensor - plural.works (If I am incorrect I heartily invite your comment at the bottom of this article!) To close this one out, below is a photo of where I installed the O2 bung. I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. To simplify . Add To Cart. In the case of the car, you can generally get out and walk (run?) It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. I had the pink ecu signal wire connected to a bullet connector on the passenger side . Have you visually verified that all your injectors are spraying? Fuel economy went from 12.5 to 13.5 gph to 10 gph. It is possible for the ECU to have an internal failure that can kill O2 sensors. Holley efi behavior with bad o2 sensor, safety feature The throttle body has a built in fuel pressure regulator set at 58.5 psi. The Tech Tips and discussions are also great! 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. A third option would be to run your EFI system without an O2 sensor at all. Full time feedback from the sensor is what the computer uses to refine the fuel table. Any exhaust down at engine level or lower will definitely get at LEAST some steam. It does not look like anything particularly superior in concept. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. Hopefully this one lasts longer than the original. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. 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. You are using an out of date browser. I have a 74 bronco, 302, mild cam. Not sure how well the sensor likes being that close to the port. Installed the sniper/MSD combo on my mildly built 460 KEM. 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. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Aug 17, 2013. The adapter plate installs in between the exhaust manifold and the riser/elbow allowing for the water jackets to still be in place and an o2 sensor to be installed in the still dry exhaust gasses. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. *Possible delays due to Covid-19 click for more information. 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. In Stock. Holley Sniper first start No o2 sensor - YouTube Idle and off-idle performance (particularly as the engine goes into gear.) Part # HM206. Add To Cart. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Yes, this is going to be an added expense, however, it will help guarantee your success. Brand: Holley EFI Emission Code: 5: Material: . I found this in the instruction manual for the older commander 950 system. Add to Cart . 5. PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. What is your fuel pressure at the carb during crank? You are using an out of date browser. Holley Sniper O2 sensor replacement - Club Cobra Sniper EFI - Holley https://www.efisystempro.com/efi-pro-hangout/sniper-installation-tips-holley-tom-kise, https://www.efisystempro.com/efi-prng-engine-startup-sniper-terminator-x-stealth. well I have installed the Sniper on my 460 KEM (Ford) marine motor. Could show a lean condition when in fact it really isn't. Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. I have a 74 bronco, 302, mild cam. Replaced O2 sensor but continued to have AFR issues running too rich. Only show this user. Everyone raving about customer service is telling the truth! 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. Part# 554-155. holley efi. May 19, 2021. Sniper EFI Releases new Stealth 4150 Models! Be sure to disable autotune and remove the O2 sensor before it dies. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. Thanks for the compliment--we look forward to your feedback! It would cost considerably more but a second option that would have added performance benefits would be to switch to a dry manifld such as the headers available from Custom Marine, Inc. It works great where its at. After a few tries by jumping the starter solenoid I then realized the ignition key was in the off position. I'm guessing by snail, that's another name for the riser? I have a 74 bronco, 302, mild cam. Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. #HM206 - ADAPTOR, O2 SENSOR for Marine use - Howell EFI Conversion Holley EFI Usb/Can Harness, Sniper Tbi. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to Most of you only need to tune 4 points, idling around the marina, part throttle - pulling the rope tight, 1/2-3/4 throttle - cruise, and YeeHaa - WOT. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. As always, your results may vary and batteries not included. I am looking for a TBI with full sensors, mainly atmospheric for Sept and Oct and a Idle Air sensor for warm starts.I welcome your thoughts.Regards, All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Capability Range: Advanced No worse than taking the reading in the intake manifold cross over. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. Everything is included to completely plumb your fuel system including; 20 feet of 3/8" EFI Hose, in-line fuel pump, post and pre fuel filters, return bulkhead, and all of the necessary fittings and hardware. Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? To take advantage of all the site features, please take a moment to register. 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. O2 Sensor in a boat exhaust | Performance Boats Forum A replacement clamp on would be an easy change out. My boat is still in winter storage. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . I've seen O2 sensors in water jacketed headers that have worked fine for years. For a better experience, please enable JavaScript in your browser before proceeding. 5. Followed all the instructions to the letter. 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. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. 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. They have mods that help. Emissions. I hope that the next F/2F header is more O2 sensor friendly. As a follow up, I ended up using an eBay type anti fouler elbow for the O2 sensor to try and get it out of the water in the manifolds. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues.
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