Stay up to date with the latest releases, events, promotions and more. Maybe my manifolds leaked the inside between the snail and the log?? So please, If you have problems registering or can't log into your account, please. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. The spark must be manually tuned. The very front would be the safest place. Only show this user. Holley EFI requires several pressure inputs in order to run an engine. Sep 14, 2021. The throttle body has a built in fuel pressure regulator set at 58.5 psi. 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. looking at doing the same. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. The very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. Also in Tools, Shop Equipment & Chemicals, Cataclean - Fuel and Exhaust System Cleaner, Cataclean Diesel - Fuel and Exhaust System Cleaner, Distribution Blocks, Filters, Adapters and Fittings, Microswitch and Solenoid Mounting Brackets, Holley EFI CAN to USB Dongle - Communication Cable, Hooker BlackHeart Oxygen Sensor O2 Bung 2.5" Clamp-On Style, Holley EFI Terminator X Wideband Adapter Harness, Earl's Oxygen Sensor Weld Fitting (Weld Bung) - Steel. I installed a holley sniper kit. Advanced throttle body injection systems capable of transmission control and more. Bolt-on carburetor style EFI for your classic car or truck. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. The sniper fit perfectly on the intake. Not sure how well the sensor likes being that close to the port. Could show a lean condition when in fact it really isn't. I hope that the next F/2F header is more O2 sensor friendly. 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 hose, clamps, and chamfering bit.In the settings I chose closed loop disabled (set to open loop) and also set learn mode to disabled. This really applies to any O2 sensor regardless of EFI system. 2014 FJ Cruiser - White - 4X4 - Loaded - . #HM206 - ADAPTOR, O2 SENSOR for Marine use - Howell EFI Conversion MAP Sensors. Part# 50-5009QFT. Depending on how fast you want one, there are plenty out there: The Cross ref numbers on the Holley forums and the Net is a Bosch 17025. Sniper EFI Installation Guide. Thanks again for writing! If you find that please let us know. JavaScript is disabled. It does not look like anything particularly superior in concept. Everything about the fuel prime shot can be adjusted. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. #3. HP comes from torque and rpm and rpm breaks things and increases wear. Then turn the engine off and "lock in" the tune in a non-feedback loop mode, and quickly remove the headers and wash them off to prevent damage and then swap to the manifolds, but that would honestly be a huge PITA. Ordered another dominator Bosch from Holley and it matches perfect. 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. EFI EFI kit electronic fuel injection. Holley 554-100 NTK Wideband Oxygen Sensor. 534-199. The fuel pump question is the tough one. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? I would prefer to run this brand new Holley EFI system in a closed loop, not set the fuel map, and use the O2 sensor as only a sensor. Increasing efficiency is always a good idea. Holley sent him a new one for free. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! Troubleshooting Holley Sniper that hesitates on acceleration Taipei has dozens of world-class restaurants where gourmets can sample the most authentic Chinese cuisines. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. the engine not running. Adam. Doesn't look like it will have an O2 sensor. If a cruiser with enclosed engine compartment, not a lot you can do to eliminate water or at least water vapor in the exhaust. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. That is defacto step one in trouble shooting fuel injection systems. Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. 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. YES! . Only a few hours on the motor but so far so good. Thanks for that, Danny. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. Engine Startup Tuning for Sniper and Terminator X Stealth Owners running holley sniper without o2 sensor - plural.works That's great--we look forward to your results! It will crank and run great for 2-15 seconds then die. Explained: Holley EFI Sensors and What They Do Holley Sniper EFI Wideband Oxygen Sensor. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Sniper EFI 4bbl Marine. With the sniper as long as you locate the o2 sensor where it gets good feedback and stays dry long enough to get a good tune you could lock it so even if the o2s get wet it still runs good. 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. Yes! Will I be able to control my ignition timing with the Sniper? temporarily running without WBO2 sensor? - Holley Part# 550-511. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. To simplify . Find a lower price anywhere and we'll beat it by 5%! Not always the case with a boat. Found out that it was due to rfi/emi. They are about 4 inches long, in-line between the log and manifold. I was mocking it up at the time. Warranty Information. I was thinking aluminum heads would run it up closer to 5,000 rpm. Sniper EFI - Holley Fortunately, it turns out there are some options. Be sure to disable autotune and remove the O2 sensor before it dies. Are you running the latest software? 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. 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. Master ASE tech since 91. This requires removing the plug with a breaker bar, and using a 1/2 NPT to 3/8 NPT adapter to mount the Sniper sensor. The Tech Tips and discussions are also great! Sniper EFI Releases new Stealth 4150 Models! Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. Holley sniper issues - 1969-70 Technical Forum - 69stang.com and EFI is the wave of the future. Part# 534-199. 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. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Holley Sniper EFI Wideband Oxygen Sensor Part Number: 510-554-155 Click image to zoom $125.99 More than 10 available Lowest Price Guarantee Sniper EFI Wideband Oxygen Sensor Replacement Part for Holley Sniper EFI and Terminator X Systems Bosch LSU 4.9 See more product details Free Shipping - Ships Today QTY Add To Cart Add to Wish List The Sniper needs a "clean" 12V wire that is hot in Start and Run. The test run was great, they have never run so well even when they were new with carbs. Now the lower cost Holley Sniper advertised for March 31 2016. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. No one cares about your buddies old antiquated garden hose technology. Installed the sniper/MSD combo on my mildly built 460 KEM. There can be leftover debris from manufacturing that have been washed down and are now clogging one. Jan 20, 2019. running holley sniper without o2 sensor - dowdcreative.com OT pipes may be out of the question, but with the water dumps put in at the transom, ala Gil or Rewarder OT pipes, you could get dry readings with bungs a little above where they bolt onto the logs, I would think. With a bad TPS you will have to manually prime to try and get it . Bolt-on carburetor style EFI for your classic car or truck. Items 1 - 21 of 21 Items. There was a 1.5 point difference in afr between banks. They have been working out well for a few years now. 10 min read. OP, the Edelbrock system looks to use the same basic sensors as the Holley sniper system: TPS, MAP and O2, plus a few supporting sensors. Sorry for the late reply, Douglas. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. You will still get some water on the engine side of the snails, mainly at low Rs. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. 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. Shop Oxygen Sensors at Summit Racing. One example of a direction could be an adjustable timed delay-on injector-power relay in the injector power feed wire, delaying 1-second after key-on or whatever is necessary to bypass the prime shot time, only. Specs. Sniper EFI 4500 Marine. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. This was for MPFI. You'll also notice that the firing order is 1-6-5-4-3-2. Still needs a EFI pump and return line. In order to do this, it heavily relies on proper O2 sensor placement. Holley sniper help!!!! | ClassicBroncos.com Forum Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. Are you running the entire system? In this case, the prime shot is good for cold, but too much for warm. $5 Off Your $100 Mobile App Purchase . I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. It is possible for the ECU to have an internal failure that can kill O2 sensors. : For registered members this ad will NOT show. If you're not running one (or if you are and the water has killed it) then it is not surprising that you are running rich. I want to register an account for free right now! Marine O2 Sensor Adapter Plate - Affordable Fuel Injection Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. Menu. 10 min read Video. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: It may not be enough to cause problems with the way the engine runs aor even make into the cylinders, but it is enough of a mist to take out a O2 sensor. Was in marine engineering for years. My bet based on longer pump run, to make pressure, you have a leaking injector. Phil is right. This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . Running? The Sniper EFI throttle-body drops in place of your . This motor would probably turn the berk to 6 grand and blow it out from a stop.Motor dyno'd on a carb @389 hp @ 4700rpm and 497 tq @3500. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Capability Range: Advanced 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. I'm about to embark on the same type of project. It could be an instant fix. Holley Sniper EFI Oxygen Sensors 554-155 Is this a good upgrade? Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. 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. Given the traditionally poor fuel economy of carbureted marine engines, we feel your pain. If the indicator reads "LOW Err" double check the connection to the CTS. The fuel lines and fittings are 3/8s with 8AN fittings and everything on the 60 requires 5/16 fuel line with 6AN fittings) Holley Sniper EFI 550-849 Holley Sniper EFI 2300 Self-Tuning Kit - Shiny Finish. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. The engine RPM when closed loop o2 will begin. The Sniper EFI throttle-body drops in place of your . watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. It works fine. Holley Sniper first start No o2 sensor - YouTube If I am reading your post correctly you are using two separate o2 sensors when using headers ? Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. 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. Bolt on 4150 Flange Carburetor Replacement. Dec 28, 2016. 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. Do you offer a USCG fuel pump kit? I will be starting mine up this month, I hope it goes well, good luck to you. 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. O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. Specs. The Sniper will do that. 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. Yes, this is an old thread, but it's an old unit. While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. Spray a rag down pretty good with brake cleaner. Other than the constraints provided in the article above I see no reason why this wouldn't be a great upgrade. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. By bypassing the built in pressure regulator in the fuel module(allowing full flow and pressure), using 3/8 hard lines to/from the sniper to meet CG rules( no soft lines on the engine block)using the snipers fuel pressure regulator, This is as close as I can come to safe. Converting Marine Engines to EFI | EFI Pro Hangout | General Studies You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps.
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