If there's anyone willing to read a bit and offer advice about what to do when doing a top-end swap (when you may be in a scenario with a new top-end that's the EFI isn't calibrated for AND you can't have an WBO2 sensor connected), please let me know. Add to Cart . 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. . $108.95. Find a lower price anywhere and we'll beat it by 5%! Without Headers Steamers location (above) is perfect, up close to the engine where you . 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. Greatest struggle is the shift interrupt. 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. Good luck! So far so good. Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! 10 min read. The new Exhaust manifolds will have wideband O2 bungs for tuning. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! It has about 18 hrs to date and is working great. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. See Details. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. 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. 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? 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. He had one there that was run on a dyno then the fuel map was set and shipped back. Brand: Holley EFI Emission Code: 4 . Plug into the coolant temperature sensor. 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. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. Got a picture? This really applies to any O2 sensor regardless of EFI system. Is this a good upgrade? I have tried several different settings to get it going, no luck. Brand: Holley EFI Emission Code: 5: Material: . 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. A 90-degree V-6 has three shared crankpins set 120 degrees apart. 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. We may earn a small commission from affiliate links and paid advertisements. For a better experience, please enable JavaScript in your browser before proceeding. Thanks for the compliment--we look forward to your feedback! The Sniper EFI throttle-body drops in place of your . I have not gone back in to try to fine tune them. However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. Pricing was reasonable, shipping was prompt and Chris helped me with a wiring question during my install. Did you use the Holley fuel pump and have you had any issues with it? My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. 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. $132.95. 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. Then operate open loop with a fuel map\Timing curve.I am interested in the capabilities of the Sniper product (4 injector) in a Marine application.. I have a 74 bronco, 302, mild cam. I know from some of the other posts, there have been WBO2 sensor issues. The in tank pump is quieter, will normally run cooler and should last longer. Do you understand that no USCG-approved aftermarket EFI fuel system (including fuel pump, lines, filters, adapters, and hose ends) exists, that installing unapproved components on a boat will make the boat out-of-compliance with USCG regulation and could result in financial loss and legal liability (and that you release us from any liability by proceeding)? Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. Systems that were already designed for marine efi. I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. Only a few hours on the motor but so far so good. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. 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. Items 1 - 21 of 21 Items. 3. The wide band O2 sensor is required for initial running and calibration. 02/25/2020. Thanks guys. Bolt-on carburetor style EFI for your classic car or truck. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. Yellow Cold! Next, the new unit was installed onto the manifold. Innovate Motorsports HBX-1 Bung Extender. 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). 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. The adapter plate installs in between the exhaust manifold and the riser/elbow allowing for the water jackets to still be in place and an o2 sensor to be installed in the still dry exhaust gasses. This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. From there, the idea is that it will self-tune to the requirements of the engine. I want to register an account for free right now! Dec 28, 2016. I have a boat with twin 3.7 Mercruisers. All times are GMT-6. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after For the most part, the small harness is plug-and-play. I had an injector fail after a month of running and called the tech line who helped me figure that out. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . With over the transoms you might get away with it if the water is introduced at the very very end, and the O2 is mounted right at the log. Maybe going all the way to the front is the way to go? Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. Part # HM206. The World's largest 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. Find a lower price anywhere and we'll beat it by 5%! 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. Install the throttle linkage to the Sniper EFI throttle body. 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. Much of the system is encased right inside the throttle bodyand that includes the ECU. The engine floods and it is embarrassing when leaving a lock. In Stock. 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. p.s. I am happy with Holleys no hassle replacement of the parts. Not always the case with a boat. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. . Affiliate. Seems to LEARN much faster than the Fitech did. . But you have to get it tuned. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. Staff Writer. I think installing a wide band O2 sensor in the manifold(s) is a great idea. Each engine has the Holley marine 2 barrel carburetor. Any exhaust down at engine level or lower will definitely get at LEAST some steam. 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. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. JavaScript is disabled. 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. 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. Capability Range: Advanced The Sniper EFI throttle-body drops in place of your . I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. 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. To those who have installed the Sniper EFI units, please post up some photos of where you tapped the exhaust line to install the Oxygen Sensor's weld bung. This doesn't mean it can't be done. Well an update on the Sniper install. Here is one on start up tuning. -- I particularly like the Daytona Sensors Approach to the Ignition Curve.- Are you pursuing Coast Guard Certification for the Sniper_EFi? 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. Categories. A third option would be to run your EFI system without an O2 sensor at all. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. 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. Supports up to 650hp with Four 100 Lb/Hr Injectors! Capability Range: Moderate Are you running the latest software? Part Number: 510-554-155. I received my replacement TPS and O2 sensor. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. 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. It works great where its at. test the sensor.. for a basic pass/fail of the sensor. Other? - You are currently viewing the forums as a GUEST. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. The spark must be manually tuned. Fortunately, it turns out there are some options. Bosch 17025 Oxygen Sensor #1 Best Seller . I will let you know what happens. I am a competent mechanic and I have checked all the usual suspect items. Master ASE tech since 91. 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. Emissions. pull the sensor out of the exhaust. Put an end to cold start issues, hesitations, vapor . Specs. There can be leftover debris from manufacturing that have been washed down and are now clogging one. Price Point: $$$. 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. But you've found the right one for your Holley Sniper EFI System OR your Terminator X EFI System. You really want a bigger engine. Visit their website for more details. May 1, 2018 They want you to angle it to keep it from fouling. 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. Was in marine engineering for years. Yellow Init In First shown for an instant when the system is powered on. Bolt on 4150 Flange Carburetor Replacement. We use cookies to enhance your experience while using our website. 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. They are the only ones got me a holley usb to can cable fast. I'll let you know how it works out. 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. Advanced throttle body injection systems capable of transmission control and more. This page was generated at 08:35 AM. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. The O2 sensor burned out immediately. quick fuel. OT pipes may be out of the question, but with the water dumps put in at the transom, ala Gil or Rewarder OT pipes, you could get dry readings with bungs a little above where they bolt onto the logs, I would think. Specs. The truck started fine after install, and ran down the road ok. Fuel economy went from 12.5 to 13.5 gph to 10 gph. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. Holley sent him a new one for free. I am a competent mechanic and I have checked all the usual suspect items. I have searched thru the forum as much as I can, with not much luck. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. 74 FJ40 confined to the swamp. I was thinking aluminum heads would run it up closer to 5,000 rpm. QFI-500 Oxygen Sensor. Holley EFI requires several pressure inputs in order to run an engine. Followed all the instructions to the letter. My bet based on longer pump run, to make pressure, you have a leaking injector. This is made by Innovate, the guy that runs the Holley EFI forum HIGHLY recomends AND uses them himself, I use them, my o2 on my wideband Innovate, kept going bad, a 4.2 Bosch o2, put this on both my Holley HP NTK sensor & the wide band, been 2 years now & lots of driving, all good, Heat-Sink Bung Extender (HBX-1) - P/N: 37290 The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. You must log in or register to reply here. From there, our highly trained factory refurbish technicians flow the original fuel injectors. You must log in or register to reply here. 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.) 3. blue doberman puppies. Running? the motor has the following mods, Aluminum heads, Performer intake, Sniper and MSD ignition module. The very front would be the safest place. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Increasing efficiency is always a good idea. Wideband Oxygen Sensor Extension Cable. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. I do agree if he can get it tuned prior to fouling he can lock that tune and run in open loop. When buying the Holley Sniper EFI kit, you've got two basic options. Anti-Seize pre-applied to sensor threads. It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. $43 per night (Latest starting price for this hotel). Only show this user. They have been working out well for a few years now. I would send an Email to Chris at EFIsystempro. The included fuel system places a 340LPH fuel pump in the tank, which can easily be . The original Holley Sniper instructions are available on the Holley website if you have misplaced them. What is your fuel pressure at the carb during crank? Precisely Adam. They have mods that help. 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. Go to the web site and it will explain the installation it is very simple and works well.As for the rpm you are comparing to completely different animals (pumps). well I have installed the Sniper on my 460 KEM (Ford) marine motor. I also capped off the regulated return line with a hose, clamps, and chamfering bit. The fuel pump question is the tough one. Free ground shipping regardless of order size! Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. Spray a rag down pretty good with brake cleaner. Purely coincidence about the '2300' number. I recently installed the sniper setup on my stock 71 duster 340 4 speed. Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. Oops, after that it cranked right up.Idle was set to 950rpm so after the vid was cut off I lowered it to 820rpm and it was purring like a kitten.EFI for dummies. 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? After discussing it in this thread and talking with Holley's tech support, I decided . The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Its the Holley Pro Jection TBI mentioned by the above poster. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. 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 will get a new 02 sensor before I swap back to the orange box. My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. Still needs a EFI pump and return line. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. According to AEM Electronics, a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: Additionally, if an Sniper or Terminator X EFI System has repeated O2 sensor failures and none of the above-listed suggestions seem likely then contact Holley and arrange to have the unit tested. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. The engines are rated at 170 hp each. Vega$69. May 19, 2021. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. 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. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. As always, your results may vary and batteries not included. Without Headers Steamers location (above) is perfect, up close to the engine where you have not lost much heat. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. Will I be able to run both systems off of one fuel pump? To take advantage of all the site features, please take a moment to register. 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.). Part # 554-155. is donald smith still alive; julie grant court tv cheerleader 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. For a better experience, please enable JavaScript in your browser before proceeding. Phil is right. Then if you are do you just wire the o2 sensors in parallel or do these EFI kits have inputs for more than one sensor. Can anyone share their experiences with this type of setup? I am just now ready to do the tuning this weekend. What exhausts are the best? If you are not running the latest software stop guessing and go download it. I installed a holley sniper kit. 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. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! Free ground shipping regardless of order size! Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: 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! 2014 FJ Cruiser - White - 4X4 - Loaded - . the engine not running. You will still get some water on the engine side of the snails, mainly at low Rs. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. 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. All of the wiring begins at the throttle body and connects outward from there. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Taking a look at the holley manual I am thinking about drilling and tapping the front exhaust port on the log for the O2 sensor. For the most part each engine wants a bit of its own timing set-up IMHO, you boat owners with a 270HP 350 (or any other config) may want 350HP but upgrading it to that level will reduce or eliminate reliability. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. away. CUSTOM ART FOR CUSTOM NEEDS. Holley EFI. I found this in the instruction manual for the older commander 950 system. All sensors are tested to ensure they accurately report critical engine data to the . 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. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. 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. 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 . About your only location is in that short area from the log to the port face. 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. I will keep the replacements as spares. Stay up to date with the latest releases, events, promotions and more. 29. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. Holley Sniper O2 sensor replacement. $119.95. EFI Systems based on Holley's world-class Dominator and HP ECU's. Not sure how well the sensor likes being that close to the port. Thinking about this I think this will work very fine! The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. 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.