running holley sniper without o2 sensor

Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . non biased Shelby Cobra related site! Hopefully this one lasts longer than the original. 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. Marine O2 Sensor Adapter Plate - Affordable Fuel Injection Q2. I am considering the Daytona Sensors Ignition module. WBO2 Sensor 17025 Bosch 554-155 Holley - EFISystemPro.com Miami, FL. So there is at least some probability of success. . Holley EFI Usb/Can Harness, Sniper Tbi. The light shines in the darkness, and the darkness has not overcome it. Pay close attention to the instructions on O2 sensor placement. Each engine has the Holley marine 2 barrel carburetor. Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. The wide band O2 sensor is required for initial running and calibration. Holley sniper issues - 1969-70 Technical Forum - 69stang.com and Part# 554-155. holley efi. Holley EFI. I'm guessing by snail, that's another name for the riser? I put mine after the collector only because I have a new exhaust and muffler going in and Ill use a weld in bung and placement will be different. Find a lower price anywhere and we'll beat it by 5%! "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. Sorry for the late reply. 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. Affiliate. Converting Marine Engines to EFI | EFI Pro Hangout | General Studies For gourmands, night markets not only offer scrumptious small . And it is timing that is equally critical to best performance and fuel economy. But you still risk a little water running back at low Rs. My boat is still in winter storage. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. 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. excessively rich mixtures), Mechanical shock (e.g. In the case of the car, you can generally get out and walk (run?) The Sniper EFI throttle-body drops in place of your . Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Phil said water would still get up over the snail and knock out the sensor. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. 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. May 19, 2021. He had one there that was run on a dyno then the fuel map was set and shipped back. When it did keep running, the headers all started to smoke. Visit their website for more details. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. blue doberman puppies. #3. This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. They have mods that help. After discussing it in this thread and talking with Holley's tech support, I decided . For now I have a genuine bosch O2 and Standard Automotive TPS installed. One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. 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. 2023 Holley Performance Products, Inc. All Rights Reserved. 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. There can be leftover debris from manufacturing that have been washed down and are now clogging one. Capability Range: Professional Then having an experienced tech from a local dyno speed shop ride in the boat as you run the power up and down, making notes. It has about 18 hrs to date and is working great. Capability Range: Advanced 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. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. The boat underway acts very much like a water brake dyno I strongly believe that a well broken in engine in good condition can stand a much more critical tune w/o issues and deliver almost the same fuel economy as the proposed EFI conversion. For a better experience, please enable JavaScript in your browser before proceeding. 2. EFI System Pro had everything I needed for my EFI upgrade. This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. What is your fuel pressure at the carb during crank? Holley Sniper EFI - Page 3 - Offshoreonly.com Sniper EFI 4500 Marine. Add to Cart . Since the Sniper install, I encountered my second O2 sensor failure so I thought I would try the "Innovate Bung Extender" recommended by a few folks here. Holley's self learning system is a blessing and a curse. Everything about the fuel prime shot can be adjusted. Go to the web site and it will explain the installation it is very simple and works well.As for the rpm you are comparing to completely different animals (pumps). Once the tune is complete, the O2 sensor can be defeated or . Part # 554-155. From there, the idea is that it will self-tune to the requirements of the engine. My tune is coincidentally set at 11.5 desired afr, with the failed side as the leanest bank, but the ecu added 15% fuel anyways. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. This page was generated at 08:35 AM. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. Only a few hours on the motor but so far so good. May God's grace bless you in the Lord Jesus Christ. I did--- Save your money and piece a fuel it together. running holley sniper without o2 sensorplymouth township mi police scanner. I want to register an account for free right now! 10 min read. I really dont want any issues on the whitewater lol turn on the ignition.but do not start the engine. replaced my original terminator x sensor that was mounted in an exhaust that took on some water and killed the original sensor. 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, YES! Sadly, no. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. We also use content and scripts from third parties that may use tracking technologies. Spray a rag down pretty good with brake cleaner. Capability Range: Advanced The fuel pump question is the tough one. My tune is coincidentally set at 11.5 desired afr, with the failed side as the leanest bank, but the ecu added 15% fuel anyways. I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. 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. It's fast, simple and absolutely free. They have been working out well for a few years now. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! It works fine. ), 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. I have a 74 bronco, 302, mild cam. Is Holley working on a complete marine package or planning to in the future? Sniper EFI Releases new Stealth 4150 Models! Holley EFI Sniper O2 Sensor Install - YouTube The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. We Test It: Holley's New Sniper EFI - MotorTrend JavaScript is disabled. Description. Part# 534-199. Seems to have more low end tq and is much smoother power through out the rpm range. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. The truck started fine after install, and ran down the road ok. Advanced throttle body injection systems capable of transmission control and more. holley efi. Was in marine engineering for years. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. Will I be able to control my ignition timing with the Sniper? They are the only ones got me a holley usb to can cable fast. Aftermarket headers are pretty much the only safe way to run an O2 sensor. I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor.

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