Taipei has dozens of world-class restaurants where gourmets can sample the most authentic Chinese cuisines. Welcome to ClassicBroncos! I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. I recommend popping for the Master . I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. EFI Swap | Shamrock Boat Owners' Club 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 am a competent mechanic and I have checked all the usual suspect items. Affiliate. Tune the delay relay timing to just miss the prime shot.For cold starts, a simple push-button or switch "choke" override to power the relay during prime would provide it. Thanks for the compliment--we look forward to your feedback! But for just over $10 and two simple configuration changes you can switch to a progressive linkage that opens only the two primary barrels at first and then brings in the secondary barrels at a later point. O2 sensor placement is critical for getting your engine to read the oxygen in the exhaust correctly and can directly impact the performance of your new EFI installation. I have a 74 bronco, 302, mild cam. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. I don't have enough experience with marine applications to know exactly what it will take to solve this. Sniper EFI 4500 Marine. I have about 30 hrs on the unit and it just keeps getting smoother with every hr of run time. Introducing Sniper EFI Master Kits, with a Returnless Retrofit Fuel Module. The wide band O2 sensor is required for initial running and calibration. Bosch 17025 Oxygen Sensor #1 Best Seller . Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: test the sensor.. for a basic pass/fail of the sensor. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Spray a rag down pretty good with brake cleaner. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. 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. Copyright 2022 Holley Performance Products, Inc. All right reserved. Wideband Oxygen Sensor Extension Cable. YES! Are you holding your RPMs back with the MSD for some reason? I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. Capability Range: Moderate Ran about 5 seconds and died. Converting Marine Engines to EFI | EFI Pro Hangout | General Studies I have a 74 bronco, 302, mild cam. I purchased the Holley HP MPFI system and went to the lake with it. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). 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. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. I would send an Email to Chris at EFIsystempro. Holley sniper efi error 21 - bqfoki.lesthetiquecusago.it Do you offer a USCG fuel pump kit? Why? Terminator X O2 sensor Off the shelf replacement? I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. Fuel economy went from 12.5 to 13.5 gph to 10 gph. He had one there that was run on a dyno then the fuel map was set and shipped back. Without Headers Steamers location (above) is perfect, up close to the engine where you . Seems to have more low end tq and is much smoother power through out the rpm range. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. I just discovered that was the case with my Fitech. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after Not always the case with a boat. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. 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. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! 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. -- I particularly like the Daytona Sensors Approach to the Ignition Curve.- Are you pursuing Coast Guard Certification for the Sniper_EFi? Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Holley's self learning system is a blessing and a curse. Has been since the 80's. There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. Only show this user. Yellow Cold! You must log in or register to reply here. 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. I really dont want any issues on the whitewater lol Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. Followed all the instructions to the letter. The light shines in the darkness, and the darkness has not overcome it. 2023 Holley Performance Products, Inc. All Rights Reserved. #3. Is Holley working on a complete marine package or planning to in the future? Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. Ref: https://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/I heard of the new Sniper EFI from some chatter on OffshoreOnly.com. Everything about the fuel prime shot can be adjusted. To take advantage of all the site features, please take a moment to register. Be sure to disable autotune and remove the O2 sensor before it dies. I installed the adapter and elbow so it's at an angle above the entry point. Yeah, it may sound hokey to some, but is just one option to solve the issue where you are and with what you have. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. 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. All times are GMT-6. 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. This doesn't mean it can't be done. 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. But you still risk a little water running back at low Rs. Idle and off-idle performance (particularly as the engine goes into gear.) Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. I want to register an account for free right now! The target A/F value based on load or MAF cfm, and engine speed. You'll also notice that the firing order is 1-6-5-4-3-2. Mike. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. 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. running holley sniper without o2 sensor - plural.works 5. 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. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Part# 554-155. YES! Vega$69. So much it could be. Not sure how well the sensor likes being that close to the port. I'm using the NTK sensor. Holley Sniper first start No o2 sensor - YouTube Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! 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. It looks like another season has come and passed by without the answer you wanted on this.I am impressed that you made the leap into marine fuel injection but you have experienced the same problem that everyone else who has tried this has faced. 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. temporarily running without WBO2 sensor? - Holley 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. Installing MegaSquirt in Parallel With the Stock ECU Jun 7, 2021. 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. Advanced throttle body injection systems capable of transmission control and more. It turns out that the loading generated a propeller in the water is significantly different than wheels on pavement, so much so that the map has to be tuned differently. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. Visit their website for more details. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. There was a 1.5 point difference in afr between banks. So please, If you have problems registering or can't log into your account, please. We use cookies to enhance your experience while using our website. Holley Sniper O2 sensor replacement. This really applies to any O2 sensor regardless of EFI system. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. - You are currently viewing the forums as a GUEST. Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. JavaScript is disabled. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. 5. Sort. Tech Resources. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. replaced my original terminator x sensor that was mounted in an exhaust that took on some water and killed the original sensor. 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. Maybe going all the way to the front is the way to go? The Tech Tips and discussions are also great! What Is Pinion Offset, And How Does That Affect You? This free oxygen is picked up by the O 2 sensor and determined to be indicative of a lean AFR condition when, in reality, the engine could potentially be running slightly rich. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. Q1. Pay close attention to the instructions on O2 sensor placement. The adapter does require the removal of the manifold and some machining but it allows the O2 sensor to be placed into the exhaust flow but protects it from the water exiting the block. Other? Brand: Holley EFI Emission Code: 5: Material: . 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. Boats don't cruise at 60mph up and down hills. The Fora platform includes forum software by XenForo. Sniper EFI 2300 Marine. So far so good. Holley Sniper O2 sensor replacement - Club Cobra Please consult the Holley Sniper full manual and use this guide for supplemental clarification. Amazon.com: Holley EFI Wbo2 Sensor, Sniper Tbi : Automotive Installing Holley's Sniper EFI Quadrajet System on a 1970 Corvette Sep 14, 2021. 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. Oxygen Sensor, Replacement, Sniper EFI, Terminator X, 3-wire, Thread-in, Each See More Specifications | Check the Fit. Register now for free! The truck started fine after install, and ran down the road ok. After some time, the truck will not start after it comes to operating temperature. I tried holley tech support, no answer and put on hold for hours. It needs the tip pointed down at least 10 degrees from horizontal and at least 15 degrees from vertical I prefer about a 45 degree angle from horizontal. Holley sniper issues - 1969-70 Technical Forum - 69stang.com and Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. 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. O2 Hotel Taipei Main Station - KAYAK This is the 02 sensor adapter I used. 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. This is great information that can only get you closer to an ideal solution. 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. O2 Sensor in a boat exhaust | Performance Boats Forum John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. Staff Writer. 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. The O2 sensor burned out immediately. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. You are using an out of date browser. May 19, 2021. 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.