Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? . This really applies to any O2 sensor regardless of EFI system. Each engine has the Holley marine 2 barrel carburetor. 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. We also use content and scripts from third parties that may use tracking technologies. It's hallmark is its simplicity--but in this case it is also it's shortcoming. Sort. 29. May 19, 2021. You are using an out of date browser. It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. Late to the party but here's where mine are installed. That's great--we look forward to your results! For a better experience, please enable JavaScript in your browser before proceeding. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. When it did keep running, the headers all started to smoke. Part # 554-155. pull the sensor out of the exhaust. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. The engines are rated at 170 hp each. Warranty Information. non biased Shelby Cobra related site! While this is extremely unlikely if you are having immediate, back-to-back O2 sensor failures you should make the effort to rule this out. The boat underway acts very much like a water brake dyno I strongly believe that a well broken in engine in good condition can stand a much more critical tune w/o issues and deliver almost the same fuel economy as the proposed EFI conversion. I hope that the next F/2F header is more O2 sensor friendly. Super helpful and knowledgeable. i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. The Sniper will do that. Oxygen Sensor, Replacement, Sniper EFI, Terminator X, 3-wire, Thread-in, Each See More Specifications | Check the Fit. 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. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. 02 sensors are very heat sensitive, and can detect an exhaust pulsation in a single Header tube, that's why we always wanted to position the sensor into at least 2 opposite firing tubes we running Headers. 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. It appears that its a tuning issue. 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. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. Finally, do you also recognize that the self-tuning feature of the Sniper EFI may not result in an acceptable configuration for your boat and, as such, may require you to seek professional tuning? Doesn't look like it will have an O2 sensor. CTS (Coolant Temperature Sensor) - Reads engine temperature. Other than the constraints provided in the article above I see no reason why this wouldn't be a great upgrade. I installed it without O2 sensor, adjust on the fly. Bosch 17025 Oxygen Sensor #1 Best Seller . Most of Holley's EFI systems provide a Setup Wizard that builds a base configuration file that allows you to start the engine and operate the vehicle. 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 was thinking aluminum heads would run it up closer to 5,000 rpm. If you are not running the latest software stop guessing and go download it. 2023 Holley Performance Products, Inc. All Rights Reserved. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . Thanks for that, Danny. (REGISTERED USERS DO NOT SEE THIS POST/AD! I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. Wideband Oxygen Sensor Extension Cable. 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. http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. 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 truck started fine after install, and ran down the road ok. Holley's self learning system is a blessing and a curse. For a better experience, please enable JavaScript in your browser before proceeding. I will be calling around to see if I can find someone to help that has experience. 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. EFI System Pro had everything I needed for my EFI upgrade. He had one there that was run on a dyno then the fuel map was set and shipped back. Great Article. Part Number: 510-554-155. Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. It could be an instant fix. 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. Register now for free! Holley EFI. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. While the Sniper has an absolutely outstanding internal ECU, the current model does not offer any laptop programmability. Sniper EFI 2300 Marine. Throttle body mounted ECU - no extra boxes to mount. So please, If you have problems registering or can't log into your account, please. I found this in the instruction manual for the older commander 950 system. If the indicator reads "LOW Err" double check the connection to the CTS. It will not fit on round or oval risers without a suitable flat area. Specs. Sent unit back to Holley. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. This page was generated at 08:35 AM. You must log in or register to reply here. I have also picked up another .5 gallons per hr to about 9.25 gph. You'll also notice that the firing order is 1-6-5-4-3-2. 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. When problem-solving this type of issue, consider when and how you could use a work-around. That sounds like one solution. We may earn a small commission from affiliate links and paid advertisements. The Sniper EFI master kit contains the most complete EFI fuel system on the market. 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. It only runs rich on start up for a second due to the prime, after start it runs great. They have been working out well for a few years now. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. Thanks guys. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. away. 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 ones in the Bosch box come without warranty. Capability Range: Moderate However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. Any word on this? There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. the engine not running. Plug into the coolant temperature sensor. 534-199. An adapter harness is available to connect this distributor directly to the Sniper EFI throttle body. Thanks for the compliment--we look forward to your feedback! But you still risk a little water running back at low Rs. Wideband Oxygen Sensor Extension Cable. p.s. Emissions. This Video Shows Ideal O2 Sensor Placement! 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. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. 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. 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. It does not work with the Sniper EFI oxygen sensor. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. Introducing Sniper EFI Master Kits, with a Returnless Retrofit Fuel Module. 2. Installed the sniper/MSD combo on my mildly built 460 KEM. Now the lower cost Holley Sniper advertised for March 31 2016. The in tank pump is quieter, will normally run cooler and should last longer. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. 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). I installed a holley sniper kit. Much of the system is encased right inside the throttle bodyand that includes the ECU. Brand: Holley EFI Emission Code: 4 . I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. The new throttle response was significant,fuel saving and gave me a turn key cold start.Still I can't have an idle speed under load and a turn key warm start. Newer ECMs have all the options to configure these functions. The engine RPM when closed loop o2 will begin. Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. Master ASE tech since 91. . It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. I am happy with Holleys no hassle replacement of the parts. Your talking flames at that point, and it will definitely have an effect on the reading. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Capability Range: Advanced 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 recently installed the sniper setup on my stock 71 duster 340 4 speed. Full time feedback from the sensor is what the computer uses to refine the fuel table. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. Advanced throttle body injection systems capable of transmission control and more. Not always the case with a boat. quick fuel. I think I could run more boost but it's a real hand full right now. I am interested in upgrading both engines with Pertronix Ignitor or Ignitor II ignition and the Holley Sniper EFI 2300 and the Howell EFI marine O2 sensor adapter. Attempted to make a parts run in my 1990 Third gen Chevy Camaro with a small block chevy 350 with flowmaster mufflers.I believed the issue in this video to b. 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. Sort. Only show this user. Spray a rag down pretty good with brake cleaner. 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). Seems to LEARN much faster than the Fitech did. Add To Cart. Add To Cart. I've seen O2 sensors in water jacketed headers that have worked fine for years. Categories. 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. Install the throttle linkage to the Sniper EFI throttle body. 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. Holley EFI has the solutions you need to get your project up and running better than ever! No one cares about your buddies old antiquated garden hose technology. If you have long tube headers, mount the sensor approximately 6-10" after the collector. Good luck to all. Previously, none of Holley's throttle body injection (TBI) systems, such as the Terminator EFI were USCG approved (even though the HP and Dominaor ECU's themselves are.) AFR was 19 area. No matter what I do, it will not start. Ran about 5 seconds and died. For a better experience, please enable JavaScript in your browser before proceeding. A forum community dedicated to performance boat owners and enthusiasts. I really dont want any issues on the whitewater lol Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Just a rumor. As far as a sensor goes, absolutely nothing. Make sure to put anti seize on the threads. I was mocking it up at the time. My bet based on longer pump run, to make pressure, you have a leaking injector. Bolt-on carburetor style EFI for your classic car or truck. $119.95. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. 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. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. Bolt-on carburetor style EFI for your classic car or truck. If you call, they usually let you put in your name and they get back to you. From there, our highly trained factory refurbish technicians flow the original fuel injectors. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Not sure how well the sensor likes being that close to the port. Free ground shipping regardless of order size! Do you offer a USCG fuel pump kit? Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . 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. It may not display this or other websites correctly. YES! If it's working to prolong the life of the sensor in the AEM Wideband kit then there is no reason to believe it wouldn't work with any other sensor. 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. 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. It's fast, simple and absolutely free. The World's largest May God's grace bless you in the Lord Jesus Christ. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Yeah, it may sound hokey to some, but is just one option to solve the issue where you are and with what you have. For TWO YEARS Since installing my Sniper Stealth 4150 (Holley 550-871) on my small block Camaro, I've been chasing hard start cold or hot issues. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. Will I be able to run both systems off of one fuel pump? My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. These types of adjustable on-delay timer relays are on sites like Amazon for less than $10 up to $15. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. Followed all the instructions to the letter. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. Also the progressive link. $43 per night (Latest starting price for this hotel). Followed all the instructions to the letter. 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. Holley EFI Oxygen Sensor. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Im almost at your exact same setup on a Redline 460/Berkeley pump but waiting to pull the trigger on the Sniper until I can pinpoint exactly where I can install the o2 sensor without the wet exhaust damaging it. For the most part, the small harness is plug-and-play. Q2. O2 sensors are water proof. Douglas Cline. #1. 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. Look at the bottom.. 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. Welcome to ClassicBroncos! See Details. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. In this case, the prime shot is good for cold, but too much for warm. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. Add to Cart . Put an end to cold start issues, hesitations, vapor . 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. I am a competent mechanic and I have checked all the usual suspect items. For now I have a genuine bosch O2 and Standard Automotive TPS installed. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. I'll let you know how it works out. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). I have a boat with twin 3.7 Mercruisers. To take advantage of all the site features, please take a moment to register. check out the. I have a 74 bronco, 302, mild cam. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. Without Headers Steamers location (above) is perfect, up close to the engine where you have not lost much heat. The O2 sensor burned out immediately. All sensors are tested to ensure they accurately report critical engine data to the . Supports up to 650hp with Four 100 Lb/Hr Injectors! This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. Brand: Holley EFI Emission Code: 5: Material: . Sniper EFI Releases new Stealth 4150 Models! functioning controller during engine operation. 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. 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. But it is going to be a little tricky. EFI System Pro also has a good bit of tech info on their website. I want to register an account for free right now! so far so good love the smooth power and easy starts. 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. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. The clamp-on that came with mine wasnt a good fit on my 2" pipe. 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. 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. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. Right now I'm just using the AEM Wideband sensor to monitor Air/Fuel ratio but hope to use it in an EFI system soon. On my system, I machined in the O2 sensor right between the snail and the manifold of a . To simplify . Everyone raving about customer service is telling the truth! The engine floods and it is embarrassing when leaving a lock. - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. turn on the ignition.but do not start the engine. Joe, where did you end up installing the o2 sensor on your setup? I have tried several different settings to get it going, no luck. Price Point: $$$. It flows 850 cfm and can support up to 650 horsepower. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. When either of these operating temperature ranges is exceeded, the sensor can no longer be . My boat is still in winter storage. 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. Is this a good upgrade? Pay close attention to the instructions on O2 sensor placement. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. Are you running the latest software? Holley EFI Usb/Can Harness, Sniper Tbi. Shop Oxygen Sensors at Summit Racing. 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. 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. Then they had it repaired and back to me in 5 business days. Capability Range: Advanced I installed a holley sniper kit. 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. 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. The truck started fine after install, and ran down the road ok. It will crank and run great for 2-15 seconds then die. : For registered members this ad will NOT show. Dec 28, 2016. Then if that doesn't work call the tech line they are great! Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. I know from some of the other posts, there have been WBO2 sensor issues. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? They have mods that help. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. It works great where its at. test the sensor.. for a basic pass/fail of the sensor. I am just now ready to do the tuning this weekend. The sniper fit perfectly on the intake. 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. USCG approval is certainly worth careful consideration, as being on a boat that catches on fire is even more serious than being in a car that catches on fire.