Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Holley EFI Usb/Can Harness, Sniper Tbi. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after Use a return fuel line. Thanks for the feedback on this adapter, Donald. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. 5. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. . Also some tips on preventing O2 sensor damage After discussing it in this thread and talking with Holley's tech support, I decided . Ordered another dominator Bosch from Holley and it matches perfect. It works great where its at. Car runs perfect . If you let it cool down again, does it start up fine? Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! I recently installed the sniper setup on my stock 71 duster 340 4 speed. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. I was mocking it up at the time. I have searched thru the forum as much as I can, with not much luck. Did you use the Holley fuel pump and have you had any issues with it? This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? Spray a rag down pretty good with brake cleaner. 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. EFI EFI kit electronic fuel injection. the engine not running. Bolt-on carburetor style EFI for your classic car or truck. 2014 FJ Cruiser - White - 4X4 - Loaded - . Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. Followed all the instructions to the letter. In Stock. . If a cruiser with enclosed engine compartment, not a lot you can do to eliminate water or at least water vapor in the exhaust. It's hallmark is its simplicity--but in this case it is also it's shortcoming. Still needs a EFI pump and return line. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. Thanks for the compliment--we look forward to your feedback! In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. I do agree if he can get it tuned prior to fouling he can lock that tune and run in open loop. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. Bolt-on carburetor style EFI for your classic car or truck. Do you offer a USCG fuel pump kit? 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. 3. This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. Dec 28, 2016. Master ASE tech since 91. . Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. I installed a holley sniper kit. non biased Shelby Cobra related site! The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! No matter what I do, it will not start. We also use content and scripts from third parties that may use tracking technologies. I recommend popping for the Master . Holley EFI has the solutions you need to get your project up and running better than ever! Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. When either of these operating temperature ranges is exceeded, the sensor can no longer be . This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues. 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. 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 Tech Tips and discussions are also great! I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. I tried holley tech support, no answer and put on hold for hours. For a better experience, please enable JavaScript in your browser before proceeding. Thinking about this I think this will work very fine! Here is one on start up tuning. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. The truck started fine after install, and ran down the road ok. They are about 4 inches long, in-line between the log and manifold. Douglas Cline. Bosch 17025 Oxygen Sensor #1 Best Seller . Register now for free! I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? Mine is right where Steamers is, and works well with my AFI TBI. Marc, you don't mention which system you installed but the Holley systems are fully configurable. I did--- Save your money and piece a fuel it together. Now the lower cost Holley Sniper advertised for March 31 2016. It has about 18 hrs to date and is working great. Sniper EFI 4bbl Marine. Do you also recognize that the O2 sensor that is required for closed-loop operation will not survive in the "wet" manifold used by most marine engines, and that to install a device to protect the O2 sensor from this moisture may require the removal, machining, and replacement of the exhaust manifold? 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. 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. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. Once the tune is complete, the O2 sensor can be defeated or . The Sniper will do that. 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. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. holley sniper efi Holley Sniper EFI Self-Tuning Master Kit - Black Ceramic Finish $1,475.95 Part# 550-511K holley efi 100 PSI Stainless Pressure Sensor $155.95 Part# 554-102 Are you waiting to convert your carbureted vehicle to Sniper EFI, but don't like the idea of mounting an external fuel pump? watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. 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. Are you running the entire system? 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. Joe, where did you end up installing the o2 sensor on your setup? There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. You'll also notice that the firing order is 1-6-5-4-3-2. Holley EFI requires several pressure inputs in order to run an engine. Add to Cart . I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. What is your fuel pressure at the carb during crank? Sniper EFI Releases new Stealth 4150 Models! Who knows. 2023 Holley Performance Products, Inc. All Rights Reserved. EFI System Pro had everything I needed for my EFI upgrade. I've dunked mine lots of times. 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 will let you know what happens. 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. It will flood itself out and won't start back, just crank and crank. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. looking at doing the same. Seems to have more low end tq and is much smoother power through out the rpm range. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. To simplify . Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. As far as a sensor goes, absolutely nothing. There is no problem getting this tuned and then running open loop. 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. Follow USCG rules about materials and fittings. The sniper fit perfectly on the intake. Let me know how I can be of assistance. It doesn't even mean that you can't do it. Yellow Init In First shown for an instant when the system is powered on. You can selectively provide your consent below to allow such third party embeds. I have a boat with twin 3.7 Mercruisers. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. 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. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. There can be leftover debris from manufacturing that have been washed down and are now clogging one. . My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. And it is timing that is equally critical to best performance and fuel economy. I received my replacement TPS and O2 sensor. 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. 10 min read. Full product line and accessories at excellent pricing. Do you recommend in-tank or external fuel pump? Sort. Replaced O2 sensor but continued to have AFR issues running too rich. I stopped by Bergeron on my way back to the lake, and he said they have never found a good way to run O2 sensors in a marine exhaust. quick fuel. Just a rumor. I was thinking aluminum heads would run it up closer to 5,000 rpm. 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). Looking for some advice pertaining to Holley Sniper and Tire Size upgrades. 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. Initial Calibration in Basic Configuration. Capability Range: Moderate 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.) When it did keep running, the headers all started to smoke. 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. 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. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. For the most part, the small harness is plug-and-play. That is defacto step one in trouble shooting fuel injection systems. If you have long tube headers, mount the sensor approximately 6-10" after the collector. Throttle body mounted ECU - no extra boxes to mount. Warranty Information. Sep 14, 2021. Part # 554-155. Holley Sniper EFI Oxygen Sensors 554-155 I stopped by Bergeron on my way back to the lake, and he said they have never found a good way to run O2 sensors in a marine exhaust. Capability Range: Advanced A third option would be to run your EFI system without an O2 sensor at all. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. Sorry for the late reply, Douglas. JavaScript is disabled. I wouldn't say "never", but the last time I asked that specific question I was told it wasn't anywhere on the horizon. The Ford 2300 engine uses a Holley carburetor, but it is in fact a licensed copy of a 32/36 Weber. The first option is to just buy the injector body and the controller with the wiring harness and sensors. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Maybe this one has a shorter cable? It only runs rich on start up for a second due to the prime, after start it runs great. You must log in or register to reply here. This motor would probably turn the berk to 6 grand and blow it out from a stop.Motor dyno'd on a carb @389 hp @ 4700rpm and 497 tq @3500. Have engine apart and head checked and cleaned at machine shop. It flows 850 cfm and can support up to 650 horsepower. Its the Holley Pro Jection TBI mentioned by the above poster. Some logs have water up to just short of the port. I think I could run more boost but it's a real hand full right now. 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. It will not fit on round or oval risers without a suitable flat area. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. 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. Good luck! Why? I installed it without O2 sensor, adjust on the fly. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! Price Point: $$$. On my system, I machined in the O2 sensor right between the snail and the manifold of a . Greatest struggle is the shift interrupt. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. And the relay and fuse were mounted along the firewall. The Holley Super Sniper High Performance EFI kit comes with a coolant temperature sensor and an O2 sensor, both of which must be used for the EFI to work properly. Sorry for the late reply. 3. So there is at least some probability of success. Holley EFI Oxygen Sensor. you don't want to read that loss. I have a 74 bronco, 302, mild cam. You will still get some water on the engine side of the snails, mainly at low Rs. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Yes, this is going to be an added expense, however, it will help guarantee your success. Advanced throttle body injection systems capable of transmission control and more. Everyone raving about customer service is telling the truth! I have a 74 bronco, 302, mild cam. Fortunately, it turns out there are some options. The engines are rated at 170 hp each. Doesn't look like it will have an O2 sensor. I installed one also on mercruiser 260 hp. The O2 sensor burned out immediately. 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. Pink switched power wire, this needs to be connected to a point that is 12V in run and while cranking. The light shines in the darkness, and the darkness has not overcome it. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. Distributor and ignition box? I installed a holley sniper kit. You are using an out of date browser. Pay close attention to the instructions on O2 sensor placement. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. The ones in the Bosch box come without warranty. Innovate Motorsports HBX-1 Bung Extender. All of the wiring begins at the throttle body and connects outward from there. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. I know from some of the other posts, there have been WBO2 sensor issues. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. It will crank and run great for 2-15 seconds then die. Seems to LEARN much faster than the Fitech did. 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. You must log in or register to reply here. 2 Reviews. 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. 2. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. Without Headers Steamers location (above) is perfect, up close to the engine where you . 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. Holley's self learning system is a blessing and a curse. 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. 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. 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. What motor is this on? (probably with the edelbrock marine 2506 intake). 74 FJ40 confined to the swamp. The O2 sensor burned out immediately. well I have installed the Sniper on my 460 KEM (Ford) marine motor. In order to do this, it heavily relies on proper O2 sensor placement. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Part# 50-5009QFT. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. You really want a bigger engine. I have not yet got it figured out. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. Yes, this is an old thread, but it's an old unit. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. Yellow Cold! A replacement clamp on would be an easy change out. From there, our highly trained factory refurbish technicians flow the original fuel injectors. CUSTOM ART FOR CUSTOM NEEDS. 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. 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. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. Brand: Holley EFI Emission Code: 5: Material: . It works fine. I'm about to embark on the same type of project. Some parts are not legal for use in California or other states with similar regulations. Brand: Holley EFI Emission Code: 4 . 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. Anything else is going to be a frustrating recipe for for failure. By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. Advanced throttle body injection systems capable of transmission control and more. The Sniper EFI throttle-body drops in place of your . Vega$69. Systems that were already designed for marine efi. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . Sniper EFI Installation Guide. Replacement Sniper and Terminator X O2 Sensor. *Possible delays due to Covid-19 click for more information. Even though you now have the USCG-approved Sniper EFI System as an option for your new EFI System you're not quite out of the woods yet. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! Stay up to date with the latest releases, events, promotions and more. 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. $43 per night (Latest starting price for this hotel). Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. Your talking flames at that point, and it will definitely have an effect on the reading. It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. Q1. Part# 554-155. holley efi. Emissions. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . . turn on the ignition.but do not start the engine. Great Article. 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 didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. The Sniper EFI master kit contains the most complete EFI fuel system on the market. 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. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor.