The Sniper will do that. Fine tuned the timing to 12-15 degrees. Joe, where did you end up installing the o2 sensor on your setup? the engine not running. Phil is right. To close this one out, below is a photo of where I installed the O2 bung. Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. I am a competent mechanic and I have checked all the usual suspect items. 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. Visit their website for more details. Running? 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. Emissions. 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). But you still risk a little water running back at low Rs. You must log in or register to reply here. Welcome to ClassicBroncos! 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. Mine is right where Steamers is, and works well with my AFI TBI. This doesn't mean it can't be done. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. When either of these operating temperature ranges is exceeded, the sensor can no longer be . Innovate Motorsports HBX-1 Bung Extender. Features: . What you are able to accomplish with a Sniper is done exclusively through the setup wizard application on the 3.5-inch handheld.The Temrinator is designed to be set up with it's own setup wizard on the same 3.5-inch handheld display--but since it has a stand-alone ECU, it can also be fully programmed via the Holley laptop software. For now I have a genuine bosch O2 and Standard Automotive TPS installed. There can be leftover debris from manufacturing that have been washed down and are now clogging one. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. My question is concerning what happens a year later, when I have a top-end swap . 29. I installed a holley sniper kit. Holley Sniper EFI Wideband Oxygen Sensor. Add to Cart . Sniper EFI - Holley Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. I was thinking aluminum heads would run it up closer to 5,000 rpm. Bosch 17025 Oxygen Sensor #1 Best Seller . 100% identical. Capability Range: Advanced I've dunked mine lots of times. I have searched thru the forum as much as I can, with not much luck. So please, If you have problems registering or can't log into your account, please. An O2 sensor is used when converting an engine to fuel injection and wanting to move from an "open loop" system to a "closed loop" system. I will keep the replacements as spares. Be sure to disable autotune and remove the O2 sensor before it dies. 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. 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. 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. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. . RPM going up and down , miss firing and backfiring. Below are the most common sensor usages in a Holley EFI system, however pressure transducers can be applied to any form of pressure in an automotive system, from oil pressure, to exhaust back pressure, and the data gathering usages in racing can get quite creative. Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. Purely coincidence about the '2300' number. Who knows. I installed a holley sniper kit. Terminator X O2 sensor Off the shelf replacement? Will I be able to control my ignition timing with the Sniper? 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. 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. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. 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. Looking for some advice pertaining to Holley Sniper and Tire Size upgrades. I myself will convert my 2 302's (Volvo Penta 5.0 l AQ231A) from carbs to EFI; I must find out everything before I start work on the engines, then I am satisfied to start. 3. Do you offer a USCG fuel pump kit? : For registered members this ad will NOT show. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. PDF Holley Sniper Installation Supplement The Sniper EFI master kit contains the most complete EFI fuel system on the market. 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. Homemade body parts replace the originals as they rot away but it's a 40 on the inside. Capability Range: Moderate So much it could be. If you are not running the latest software stop guessing and go download it. (If I am incorrect I heartily invite your comment at the bottom of this article!) 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. 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. But MAP sensors are very easy to physically implement and are inexpensive. O2 Hotel Taipei Main Station - KAYAK Maybe this one has a shorter cable? Otherwise I have to check for a place in my gasoline tank to put the lines in. Note the temperature sensor mounted on the back of the driver side head in the above photo. The wide band O2 sensor is required for initial running and calibration. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. blue doberman puppies. 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. This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. ), 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. As always, your results may vary and batteries not included. Are you holding your RPMs back with the MSD for some reason? 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. It works great where its at. Shop Oxygen Sensors at Summit Racing. 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. Was in marine engineering for years. And it is timing that is equally critical to best performance and fuel economy. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. In Stock. In Stock. . Find a lower price anywhere and we'll beat it by 5%! This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. I have searched thru the forum as much as I can, with not much luck. Staff Writer. Marc, you don't mention which system you installed but the Holley systems are fully configurable. They are the only ones got me a holley usb to can cable fast. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. Seems to have more low end tq and is much smoother power through out the rpm range. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. Find a lower price anywhere and we'll beat it by 5%! Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after This really applies to any O2 sensor regardless of EFI system. He had one there that was run on a dyno then the fuel map was set and shipped back. Part# 534-199. Advertising . 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. 29. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. replaced my original terminator x sensor that was mounted in an exhaust that took on some water and killed the original sensor. Perfectly Taipei - 25 Must-See City Highlights | Taipei Travel . GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! He also explains how to properly install them. Master ASE tech since 91. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. O2 Sensor in a boat exhaust | Performance Boats Forum If a cruiser with enclosed engine compartment, not a lot you can do to eliminate water or at least water vapor in the exhaust. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. test the sensor.. for a basic pass/fail of the sensor. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. 2. It flows 850 cfm and can support up to 650 horsepower. This Video Shows Ideal O2 Sensor Placement! The Holley Sniper system sells for $999.95, installs in under 2 hours, and requires only an O2 sensor, a temp sensor (both included), an electric return-style fuel pump, and four-wires to connect.. Quote Reply Topic: Holley Sniper Posted: Jan/05/2022 at 2:01pm . non biased Shelby Cobra related site! 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. Thanks for the feedback on this adapter, Donald. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. I'll let you know how it works out. Add to Cart . Free ground shipping regardless of order size! Q2. 5. Miami, FL. 4. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. Part# 50-5009QFT. I had an injector fail after a month of running and called the tech line who helped me figure that out. 02/25/2020. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. I hope that the next F/2F header is more O2 sensor friendly. Conditions when closed loop o2 should be turned off. All of the wiring begins at the throttle body and connects outward from there. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. A forum community dedicated to performance boat owners and enthusiasts. Advanced throttle body injection systems capable of transmission control and more. check out the. Sensors that are installed in an exhaust must be connected to a properly suspect bad o2 sensor with Holley efi | Yellow Bullet Forums Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? 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. so far so good love the smooth power and easy starts. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to Holley Sniper first start No o2 sensor - YouTube 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. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. As far as spark control, the Sniper will let you tune those 4 points, nothing else will. - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. I'm 3" down from the bottom of the flange to center of bung. I received my replacement TPS and O2 sensor. I just discovered that was the case with my Fitech. Holley EFI Sniper O2 Sensor Install - YouTube It may not display this or other websites correctly. Sensors: Fitting: Threaded O2 . The wiring was a bit of a mess. For gourmands, night markets not only offer scrumptious small . You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Once the tune is complete, the O2 sensor can be defeated or . In order for it to work as designed the O2 sensor has to be installed in a dry exhaust system and needs to be placed 1-10in from the collector in the headers. Here's the pic of the location with my header. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? 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. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. You can selectively provide your consent below to allow such third party embeds. Full product line and accessories at excellent pricing. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. 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. Could show a lean condition when in fact it really isn't. so simple check first, whats the fuel pressure? Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. The original Holley Sniper instructions are available on the Holley website if you have misplaced them. Without the engine running, AFR will read 35.6 The fuel pump will run off a relay in the sniper harness (blue wire) pink wire gets switch/run power to the relay. And who can blame them? Other countries likely have simmilar approval processes for marine engines. We may earn a small commission from affiliate links and paid advertisements. Installing MegaSquirt in Parallel With the Stock ECU They have been working out well for a few years now. Sniper EFI Installation Guide. Given the traditionally poor fuel economy of carbureted marine engines, we feel your pain. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. Brand: Holley EFI Emission Code: 4 . To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. I had questions on the suggested "Marine O2 Sensor Adapter" from Howell EFI (https://howellefi.com/product/adaptor-o2-sensor-for-marine-use/), but when I look to the pictures, I understand how it will work. Any exhaust down at engine level or lower will definitely get at LEAST some steam. Holley Sniper - Oxygen Sensor Location | IH8MUD Forum #1. Douglas Cline. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. So I bought the progressive linkage but you then have . 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. No worse than taking the reading in the intake manifold cross over. This doesn't apply to race boats. Put an end to cold start issues, hesitations, vapor . 5. If this is a first time effort, find a tuner in your area with marine experience. Bolt on 4150 Flange Carburetor Replacement. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. 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. 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. Welding in an O2 Sensor Bung for a Holley Sniper EFI System Good luck! In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. Late to the party but here's where mine are installed. 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. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. Copyright 2022 Holley Performance Products, Inc. All right reserved. Holley Sniper O2 sensor replacement. 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. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Holley EFI Usb/Can Harness, Sniper Tbi. It's a compact HP pump and cooler assembly. The fuel module is self contained with water jacket cooling and contains the low and high pressure pumps. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. 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. All times are GMT-6. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. Engine Startup Tuning for Sniper and Terminator X Stealth Owners Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! EFI EFI kit electronic fuel injection. I bought a new holley sniper , dual sync dist., coil, and holley in tank fuel pump, When engine got hot it would go crazy. I recommend popping for the Master . Is this a good upgrade? 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. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. *Possible delays due to Covid-19 click for more information. But it is going to be a little tricky. 10 min read. Register now for free!) 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. 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. This runs in the area of $1000 and has everything you need for a basic install on almost any vehicle equipped with a four barrel carb. It works fine. Stock manifolds? No matter what I do, it will not start. It will flood itself out and won't start back, just crank and crank. This is the 02 sensor adapter I used. We also use content and scripts from third parties that may use tracking technologies. That is defacto step one in trouble shooting fuel injection systems. Holley EFI 534-199 Wideband Oxygen Sensor Extension Cable - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? Even if you are the sort to sort of shrug off safety regulation, consider that if there is an accident that results in a loss and an investigation, failure to follow applicable USCG regulation could result in either financial or legal liability, not to mention the rejection of insurance claims. Prime cannot be adjusted on this old unit. Holley Sniper EFI Returnless Master Kit - Black Ceramic Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. If you call, they usually let you put in your name and they get back to you. Add to Cart . 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. And the relay and fuse were mounted along the firewall. 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. Doesn't look like it will have an O2 sensor. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. They are about 4 inches long, in-line between the log and manifold. 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. Installed the sniper/MSD combo on my mildly built 460 KEM. 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear. 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, 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. #1. EFI Systems based on Holley's world-class Dominator and HP ECU's. Will I be able to run both systems off of one fuel pump? . 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. Sniper EFI Quadrajet Marine. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. If you find that please let us know. Replaced and gapped to .45 all spark plugs. -- I particularly like the Daytona Sensors Approach to the Ignition Curve.- Are you pursuing Coast Guard Certification for the Sniper_EFi? Holley EFI Oxygen Sensor. Add to Cart . . Using the correct length carb stud and nuts, tighten the Sniper EFI throttle body down progressively in a "criss-cross" pattern (60-80 in.lbs.). I want to register an account for free right now! quick fuel. 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. I would send an Email to Chris at EFIsystempro. 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. Fortunately, it turns out there are some options. Capability Range: Moderate From there, our highly trained factory refurbish technicians flow the original fuel injectors. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. Let me know how I can be of assistance. 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. Yes, this is going to be an added expense, however, it will help guarantee your success. I have a boat with twin 3.7 Mercruisers. Replaced O2 sensor but continued to have AFR issues running too rich. the motor has the following mods, Aluminum heads, Performer intake, Sniper and MSD ignition module. The ones in the Bosch box come without warranty. (REGISTERED USERS DO NOT SEE THIS POST/AD! Holley Sniper EFI Oxygen Sensors 554-155 You have to one big hole in the riser, then you reach the cooling water, and one little hole in the next part of metal: now you reach the exhaust gasses.