In the case of the car, you can generally get out and walk (run?) The spark must be manually tuned. Without Headers Steamers location (above) is perfect, up close to the engine where you . Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . Also the progressive link. I hope that the next F/2F header is more O2 sensor friendly. Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. away. The Sniper EFI master kit contains the most complete EFI fuel system on the market. Sadly, no. Capability Range: Moderate Holley EFI Sniper O2 Sensor Install - YouTube I thought the clamp on style mount was a good idea in case the threads got buggered up when a sensor change might occur, and the threads are rusted up by then. $5 Off Your $100 Mobile App Purchase . . I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. They have been working out well for a few years now. So far so good. You'll also notice that the firing order is 1-6-5-4-3-2. 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. Welding in an O2 Sensor Bung for a Holley Sniper EFI System functioning controller during engine operation. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. I've dunked mine lots of times. I just discovered that was the case with my Fitech. I'm guessing by snail, that's another name for the riser? In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. Holley EFI Usb/Can Harness, Sniper Tbi. PS, Once someone has a good 270/350 tune, everyone can use it. Much of the system is encased right inside the throttle bodyand that includes the ECU. Holley EFI Oxygen Sensor. EFI Systems based on Holley's world-class Dominator and HP ECU's. Visit their website for more details. Holley Sniper EFI Oxygen Sensors 554-155 - Summit Racing Equipment Price Point: $$$. But it is going to be a little tricky. In Stock. 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. If he wants to run in closed loop and have the system adapting to conditions at all times, the minute he fouls he is dead in the water. 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. Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. Anything else is going to be a frustrating recipe for for failure. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. 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. The engine floods and it is embarrassing when leaving a lock. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. No worse than taking the reading in the intake manifold cross over. That is defacto step one in trouble shooting fuel injection systems. A forum community dedicated to performance boat owners and enthusiasts. That sounds like one solution. A replacement clamp on would be an easy change out. 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. If you let it cool down again, does it start up fine? EFI EFI kit electronic fuel injection. Your talking flames at that point, and it will definitely have an effect on the reading. Holley recommends a 3/8" fuel supply line. Bosch 17025 Oxygen Sensor #1 Best Seller . Apr 13, 2017. with the extension. Install the throttle linkage to the Sniper EFI throttle body. 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. The opposing pistons share a crankpin the way they do in a V-8, but the fact that there are only three cylinders on each bank means that the plugs fire at 90-150-90-150-90-150 intervals. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. I have a 74 bronco, 302, mild cam. Holley EFI 534-49 Holley Oxygen Sensor O2 Bung Weld-In Style Menu. Thanks for the heads up. 5. 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. If the indicator reads "LOW Err" double check the connection to the CTS. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. I recommend popping for the Master . The reason I say this is that nowhere in this discussion is the fact that none of these systems are are handling the timing on the fly. My bet based on longer pump run, to make pressure, you have a leaking injector. I've seen O2 sensors in water jacketed headers that have worked fine for years. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. I am a competent mechanic and I have checked all the usual suspect items. Joe, where did you end up installing the o2 sensor on your setup? Once you have those points set, the rest of the map doesn't really matter, just make it look smooth/pretty and everything will be fine. 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. Could show a lean condition when in fact it really isn't. 3. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Holley EFI requires several pressure inputs in order to run an engine. Plug-And-Play Compatible with Holley Sniper EFI System, Only for applications that use a Bosch LSU 4.9 0 258 017 025 (17025) Wideband O2 Sensor, Particulates, carbon (e.g. Description. The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. Bolt-on carburetor style EFI for your classic car or truck. Sent unit back to Holley. How To Properly Place and Install an O2 Sensor - Holley But this also makes me wonder what you did for the O2 sensor. I want to register an account for free right now! This combines the Sniper EFI Self Learning Throttle Body, with an easy to install In-Tank Retrofit Returnless Module, 20 ft of Earl's Vapor Guard Fuel Hose, and the required fittings. Waiting for spring to put back together. 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. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. There was a 1.5 point difference in afr between banks. Does an yone have a pic of the O2 sensor in their exhaust? All of the wiring begins at the throttle body and connects outward from there. My hand is holding the connector to the sensor. Marine O2 Sensor Adapter Plate - Affordable Fuel Injection but I'm finding when running engines with holley sniper kits the the engines are very eratic ,the air fuel numbers are always changing drastically from one pull to . Idle and off-idle performance (particularly as the engine goes into gear.) So there is at least some probability of success. Put an end to cold start issues, hesitations, vapor . Not sure how well the sensor likes being that close to the port. Stock manifolds? Holley Sniper Marine EFI | Bloodydecks Other? I found this in the instruction manual for the older commander 950 system. Advanced throttle body injection systems capable of transmission control and more. Copyright 2022 Holley Performance Products, Inc. All right reserved. EFI System Pro also has a good bit of tech info on their website. You have to angle it to help the throttle cable get around the booster. *Possible delays due to Covid-19 click for more information. Amazon.com: Holley EFI Wbo2 Sensor, Sniper Tbi : Automotive Innovate Motorsports HBX-1 Bung Extender. Precisely Adam. I installed a holley sniper kit. $108.95. Add To Cart. As far as spark control, the Sniper will let you tune those 4 points, nothing else will. The very front would be the safest place. We may earn a small commission from affiliate links and paid advertisements. From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. Sniper EFI 4bbl Marine. Seems to have more low end tq and is much smoother power through out the rpm range. Advanced throttle body injection systems capable of transmission control and more. . When either of these operating temperature ranges is exceeded, the sensor can no longer be . #1. Sniper EFI Releases new Stealth 4150 Models! Holley Sniper EFI Self-Tuning Kit - Shiny Finish, Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish, Holley Sniper EFI Self-Tuning Kit - Classic Gold Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Shiny Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Black Ceramic Finish, Holley Sniper EFI 2300 Self-Tuning Kit - Classic Gold Finish. Staff Writer. When it did keep running, the headers all started to smoke. (If I am incorrect I heartily invite your comment at the bottom of this article!) 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. temporarily running without WBO2 sensor? - Holley Fine tuned the timing to 12-15 degrees. When buying the Holley Sniper EFI kit, you've got two basic options. Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. Yes! Only show this user. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. QFI-500 Oxygen Sensor. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! Sensors: Fitting: Threaded O2 . Full product line and accessories at excellent pricing. Are you running the entire system? I have a boat with twin 3.7 Mercruisers. You are using an out of date browser. . Holley Sniper EFI Returnless Master Kit - Black Ceramic One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. excessively rich mixtures), Mechanical shock (e.g. Replaced O2 sensor but continued to have AFR issues running too rich. Good luck! Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. Staff Writer. Holley sniper help!!!! | ClassicBroncos.com Forum Taipei has dozens of world-class restaurants where gourmets can sample the most authentic Chinese cuisines. The in tank pump is quieter, will normally run cooler and should last longer. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. Advertising . 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. 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. New 100 owner, long time cruiserhead - https://forum.ih8mud.com/threads/new-100-owner-long-time-cruiserhead.1300238/. Are you holding your RPMs back with the MSD for some reason? I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. Aug 17, 2013. Holley sniper issues - 1969-70 Technical Forum - 69stang.com and Plug into the coolant temperature sensor. If you call, they usually let you put in your name and they get back to you. Yes, this is going to be an added expense, however, it will help guarantee your success. Any word on this? Wideband Oxygen Sensor Extension Cable. We also use content and scripts from third parties that may use tracking technologies. Phil said water would still get up over the snail and knock out the sensor. Find a lower price anywhere and we'll beat it by 5%! But you still risk a little water running back at low Rs. 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. (probably with the edelbrock marine 2506 intake). The truck started fine after install, and ran down the road ok. Hopefully this one lasts longer than the original. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. If you are not running the latest software stop guessing and go download it. Make sure to put anti seize on the threads. Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street. It flows 850 cfm and can support up to 650 horsepower. 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. 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. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. May 1, 2018 They want you to angle it to keep it from fouling. Still needs a EFI pump and return line. All sensors are tested to ensure they accurately report critical engine data to the . The Sniper EFI throttle-body drops in place of your . 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. Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. 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. Maybe this one has a shorter cable? Part Number: 510-554-155. I installed it without O2 sensor, adjust on the fly. Installed the sniper/MSD combo on my mildly built 460 KEM. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. For a better experience, please enable JavaScript in your browser before proceeding. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. No matter what I do, it will not start. EFI System Pro had everything I needed for my EFI upgrade. Converting Marine Engines to EFI | EFI Pro Hangout | General Studies Holley EFI has the solutions you need to get your project up and running better than ever! I'm looking for some more practical and scenario-specific advice; that's one small piece of it. FWIW, I called Holley to confirm the part number and they say the Bosch part number if 17212 (also available on Amazon for $64.78). To simplify . The ones in the Bosch box come without warranty. It only runs rich on start up for a second due to the prime, after start it runs great. I want to remove the old fuel injected Mercruiser factory EFI on both engines because they have begun to be troublesome. YES! Still trying to find more info on electronic conversion, only found Pertronix replacement for points so far.. What TBI, fuel pump, sensors and ECM computer are you using? Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. Systems that were already designed for marine efi. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. And it is timing that is equally critical to best performance and fuel economy. I'm 3" down from the bottom of the flange to center of bung. I don't have enough experience with marine applications to know exactly what it will take to solve this. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. running holley sniper without o2 sensorplymouth township mi police scanner. The light shines in the darkness, and the darkness has not overcome it. All times are GMT-6. Part# 554-155. holley efi. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. 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. Top 10 Sniper EFI Installation Tips from Holley's Tom Kise 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. 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, Now the lower cost Holley Sniper advertised for March 31 2016. 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. Replacement Sniper and Terminator X O2 Sensor. non biased Shelby Cobra related site! Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. Part# 554-155. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. Ran about 5 seconds and died. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. Anybody got a good 270hp 350 tune yet?I installed sniper efi on my boat runs good but feel like the wot should be better need to get the sniper controlling spark is my thoughts the old thunderbolt is either not great or timing wasn't right when I bought the boat but she runs great I just think this engine has more in it then I'm getting out of it at this time any tuning and timing advice would be great considering I'm awesome with carb n hei diet but new to efi and boat timing curve but not an idiot so I say. The engines are rated at 170 hp each. What exhausts are the best? The clamp-on that came with mine wasnt a good fit on my 2" pipe. It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt. Mark Twain, The goal in life: To die young as late as possible. Have you visually verified that all your injectors are spraying? Sort. They have mods that help. For gourmands, night markets not only offer scrumptious small . Capability Range: Moderate Add to Cart . O2 Sensor in a boat exhaust | Performance Boats Forum : For registered members this ad will NOT show. A 90-degree V-6 has three shared crankpins set 120 degrees apart. Holley Sniper O2 sensor replacement - Club Cobra Car runs perfect . I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. 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. http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. 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. In the event you decided earlier that you are going with the Sniper EFI System you will not have the requisite tuning capability by simply using the included handheld tuner. In order to do this, it heavily relies on proper O2 sensor placement. Add To Cart. Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! What I think a lot of folks are missing is correct tuning of their carburetor engines Most inboard systems I worked on were intentionally set up to run rich with minimal timing (mostly to get through the warranty period). 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. Also some tips on preventing O2 sensor damage 100% identical. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! 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. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. EFI Swap | Shamrock Boat Owners' Club Part # HM206. Note the temperature sensor mounted on the back of the driver side head in the above photo. Seemed to be getting too much fuel on hot starts and flooding out, could get it to go by putting it to the floor while cranking as Action mentioned. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. . 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. I am a competent mechanic and I have checked all the usual suspect items. I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. Sniper EFI - Holley Capability Range: Professional Mike. Was in marine engineering for years. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. 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. CUSTOM ART FOR CUSTOM NEEDS. Sniper EFI 4bbl Marine. I think I could run more boost but it's a real hand full right now. 29. The engine RPM when closed loop o2 will begin. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. 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. Bolt-on carburetor style EFI for your classic car or truck. Holley Sniper EFI System is Easy, Budget-Friendly Path to Fuel To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. WBO2 Sensor 17025 Bosch 554-155 Holley - EFISystemPro.com Brand: Holley EFI Emission Code: 4 . Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. :-), I started using OMC and Volvo Penta pumps for my conversion. 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. Wideband Realities: The Truth About Oxygen Sensors - EngineLabs Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. Given the traditionally poor fuel economy of carbureted marine engines, we feel your pain. Master ASE tech since 91. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. Sniper EFI 2300 Marine. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. That's great--we look forward to your results! It will crank and run great for 2-15 seconds then die. 4. I was mocking it up at the time. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. *Possible delays due to Covid-19 click for more information. 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. I am considering the Daytona Sensors Ignition module. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. I had the pink ecu signal wire connected to a bullet connector on the passenger side . JavaScript is disabled. I tried holley tech support, no answer and put on hold for hours. The O2 sensor burned out immediately. Specs. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Sorry for the late reply, Douglas. Adam. When problem-solving this type of issue, consider when and how you could use a work-around. Douglas Cline. However, advanced tuning software is available for the Sniper EFI System that allow them to be tuned by a competent professional with experience tuning marine applications. Whether you're engine swapping your classic car or need to manage 4000 horsepower in your twin-turbocharged drag radial race car, Holley EFI has the solutions you need to get your project up and running better than ever! 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. Do you recommend in-tank or external fuel pump? In Stock. Dec 28, 2016. On my system, I machined in the O2 sensor right between the snail and the manifold of a . I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. The other thing I want to overcome is the fuel return line; my harbor master says that I can connect my fuel return line to my CAV (lucas) gasoline filter, it has 4 connection, now only 2 are used. Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. Followed all the instructions to the letter. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. The oxygen sensor should be mounted at a point where it can read a good average of all the cylinders on one bank. 1985 fj60 (sold back to Toyota), 1997 fzj80, 1971 fj40 with 75 2F. I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. Is this a viable upgrade for my boat? Holley EFI 554-155 Holley EFI Oxygen Sensor Powering the Sniper, There are three wires that need to be connected to power on the Sniper, Red and Black main power wires, these need to be run directly to the battery and have a solid connection. Everything about the fuel prime shot can be adjusted.