running holley sniper without o2 sensor

Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. No one cares about your buddies old antiquated garden hose technology. $102.95. Found out that it was due to rfi/emi. Copyright 2022 Holley Performance Products, Inc. All right reserved. The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. Capability Range: Professional The in tank pump is quieter, will normally run cooler and should last longer. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Installing Holley Sniper EFI on a daunting, odd-fire V-6: Part 1 The original Holley Sniper instructions are available on the Holley website if you have misplaced them. There was a 1.5 point difference in afr between banks. . I have searched thru the forum as much as I can, with not much luck. 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. If you let it cool down again, does it start up fine? Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. I will be calling around to see if I can find someone to help that has experience. Installing MegaSquirt in Parallel With the Stock ECU (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. If you have long tube headers, mount the sensor approximately 6-10" after the collector. suspect bad o2 sensor with Holley efi | Yellow Bullet Forums Make sure to put anti seize on the threads. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. I had an injector fail after a month of running and called the tech line who helped me figure that out. It will crank and run great for 2-15 seconds then die. Add to Cart . Are you running the entire system? Some logs have water up to just short of the port. The clamp-on that came with mine wasnt a good fit on my 2" pipe. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Sep 14, 2021. Hello Chris,Ontario's boating season is about to launch for another year.Do you have any good news to add to your above article, any new marine friendly TBI products?In '08,I installed a Holley 21-700 TBI with the o2 mounted in the manifold to Holly specs. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. So please, If you have problems registering or can't log into your account, please. 5. Q2. Sniper EFI Quadrajet Marine. It just means that if you are thinking you'll install this, crank it, and pull away from the dock with complete success you might be in for some disappointment. #HM206 - ADAPTOR, O2 SENSOR for Marine use - Howell EFI Conversion Part# 554-155. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. Perfectly Taipei - 25 Must-See City Highlights | Taipei Travel Holley EFI 554-155 Holley EFI Oxygen Sensor For a better experience, please enable JavaScript in your browser before proceeding. 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. It flows 850 cfm and can support up to 650 horsepower. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. You can selectively provide your consent below to allow such third party embeds. Ordered another dominator Bosch from Holley and it matches perfect. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. The Holley Super Sniper High Performance EFI kit comes with a coolant temperature sensor and an O2 sensor, both of which must be used for the EFI to work properly. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. May 19, 2021. Yellow Cold! Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. He had one there that was run on a dyno then the fuel map was set and shipped back. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! The O2 sensor burned out immediately. Got a picture? I do believe that the Holley EFI ECU's have the capability to be programmed to work in this application, but have not yet found anyone who has tackled this task and been fully successful.If you (or anyone else) does make some progress on this, please reply here and let us know what works. Seems to LEARN much faster than the Fitech did. You should then have at least 18-24" of pipe after the sensor. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. . Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. Will I be able to control my ignition timing with the Sniper? 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. #3. Sniper EFI 4500 Marine. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Sensors that are installed in an exhaust must be connected to a properly functioning controller during engine operation Additionally, if an Sniper or Terminator X EFI System has repeated O2 sensor failures and none of the above-listed suggestions seem likely then contact Holley and arrange to have the unit tested. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. The sniper fit perfectly on the intake. temporarily running without WBO2 sensor? - Holley O2 sensors are water proof. My hand is holding the connector to the sensor. check out the. YES! 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. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? And who can blame them? Holley EFI 534-49 Holley Oxygen Sensor O2 Bung Weld-In Style Holley Sniper EFI Oxygen Sensors 554-155 - Summit Racing Equipment It works fine. Here is one on start up tuning. However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. Product Q&A . No prime, but a second later it's ready to crank 'normally'. Then if that doesn't work call the tech line they are great! I've dunked mine lots of times. It does not work with the Sniper EFI oxygen sensor. HP comes from torque and rpm and rpm breaks things and increases wear. Is the O2 sensor on the dyno must have a very long pipe extending past where it is positioned or backwash from the room air will violate the readings as well as any header leaks. 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. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. It works great where its at. Greatest struggle is the shift interrupt. Categories. An adapter harness is available to connect this distributor directly to the Sniper EFI throttle body. Oxygen Sensor, Replacement, Sniper EFI, Terminator X, 3-wire, Thread-in, Each See More Specifications | Check the Fit. The engine floods and it is embarrassing when leaving a lock. I was mocking it up at the time. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. This Video Shows Ideal O2 Sensor Placement! For complete information about the cookies we use, data we collect and how we process them, please check our, actual instructions in flowcharting are represented in, Why Is Dave Blankenship Not On Oak Island Season 8, rhode island groundwater classification map. Well an update on the Sniper install. ), 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. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. On my system, I machined in the O2 sensor right between the snail and the manifold of a . Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. 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. Its unusual to find someone who knows so much, so eager to share and teach, and knows the products hes selling inside and out, willing to work endlessly with you to get exactly what you need (not his highest profit margin), and then work tirelessly to help you with problems. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. If a cruiser with enclosed engine compartment, not a lot you can do to eliminate water or at least water vapor in the exhaust. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. Your BluePrint Engine will be equipped with a Holley model 550-510, or 550-511 (identical except for finish color) on 4150 flanged intake manifolds. Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. I would back-burner the ignition control questions until you get the fuel injection working. Then operate open loop with a fuel map\Timing curve.I am interested in the capabilities of the Sniper product (4 injector) in a Marine application.. It may not display this or other websites correctly. Since your existing low-pressure fuel system is not going to work with the Sniper EFI System this puts you in the unenviable position of choosing between USCG compliance or EFI. Holley Sniper EFI System is Easy, Budget-Friendly Path to Fuel Other? I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. On EFI systems such as Holley's Sniper, all of the EFI sensors (except for the O2 and coolant temperature sender) are mounted snuggly in the throttle body. Can more detail be provided? MAP Sensors. Great Article. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. Anything else is going to be a frustrating recipe for for failure. Thanks again for writing! While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. That is defacto step one in trouble shooting fuel injection systems. running holley sniper without o2 sensorplymouth township mi police scanner. It flows 850 cfm and can support up to 650 horsepower. I tried holley tech support, no answer and put on hold for hours. I have not yet got it figured out. Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. He is a wizard, might be able to give you some pointers, will ask you what version of the software you are on, whether you're running the progressive adjustable linkage, etc. 29. I am a competent mechanic and I have checked all the usual suspect items. 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. Running? Has been since the 80's. . 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. Sorry for the late reply, Douglas. I also capped off the regulated return line with a hose, clamps, and chamfering bit. 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. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Capability Range: Advanced If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. AFR was 19 area. Holley Sniper first start No o2 sensor - YouTube Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. RPM going up and down , miss firing and backfiring. Hi all, i'm contemplating doing a sniper quadrajet swap onto my volvo penta 5.7 GL 2bbl holley motor in my 1997 cobalt 200 with the DP-S outdrive. We may earn a small commission from affiliate links and paid advertisements. 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. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. 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. Add To Cart. If you are not running the latest software stop guessing and go download it. The test run was great, they have never run so well even when they were new with carbs. Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. Not sure how well the sensor likes being that close to the port. Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! Marc, you don't mention which system you installed but the Holley systems are fully configurable.

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