I've dunked mine lots of times. Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. He is a wizard, might be able to give you some pointers, will ask you what version of the software you are on, whether you're running the progressive adjustable linkage, etc. Have you visually verified that all your injectors are spraying? O2 sensors are water proof. The World's largest I have tried several different settings to get it going, no luck. Holley recommends a 3/8" fuel supply line. I just discovered that was the case with my Fitech. The Sniper will do that. I installed the adapter and elbow so it's at an angle above the entry point. All of the wiring begins at the throttle body and connects outward from there. Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. Part# 550-511. I also capped off the regulated return line with a hose, clamps, and chamfering bit. 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. 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. Yellow Init In First shown for an instant when the system is powered on. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. I installed it without O2 sensor, adjust on the fly. You'll also notice that the firing order is 1-6-5-4-3-2. The truck started fine after install, and ran down the road ok. After some time, the truck will not start after it comes to operating temperature. $108.95. It doesn't even mean that you can't do it. Sniper EFI 4bbl Marine. Looking for some advice pertaining to Holley Sniper and Tire Size upgrades. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. Follow USCG rules about materials and fittings. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to Yes! If I am reading your post correctly you are using two separate o2 sensors when using headers ? But for just over $10 and two simple configuration changes you can switch to a progressive linkage that opens only the two primary barrels at first and then brings in the secondary barrels at a later point. The wide band O2 sensor is required for initial running and calibration. Phil is right. Warranty Information. When either of these operating temperature ranges is exceeded, the sensor can no longer be . Ideally I'd want the power plant running as efficiently as possible, but I'd sure like the benefit of EFI over carb. It would cost considerably more but a second option that would have added performance benefits would be to switch to a dry manifld such as the headers available from Custom Marine, Inc. Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. 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. Make sure to put anti seize on the threads. Bosch 17025 Oxygen Sensor #1 Best Seller . I recommend popping for the Master . 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. 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. That is defacto step one in trouble shooting fuel injection systems. I have not gone back in to try to fine tune them. It flows 850 cfm and can support up to 650 horsepower. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. Bolt-on carburetor style EFI for your classic car or truck. Capability Range: Moderate 2 Reviews. Thinking about this I think this will work very fine! In order to do this, it heavily relies on proper O2 sensor placement. Holley EFI has the solutions you need to get your project up and running better than ever! Thanks. *Possible delays due to Covid-19 click for more information. The throttle body has a built in fuel pressure regulator set at 58.5 psi. Find a lower price anywhere and we'll beat it by 5%! He knows his stuff, gets back quickly to you, etc. 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. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. Super helpful and knowledgeable. Are you holding your RPMs back with the MSD for some reason? Visit their website for more details. 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. 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. Staff Writer. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Then they had it repaired and back to me in 5 business days. Good luck to all. 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. Douglas Cline. 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 spark must be manually tuned. 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. Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! -- I particularly like the Daytona Sensors Approach to the Ignition Curve.- Are you pursuing Coast Guard Certification for the Sniper_EFi? Yeah, it may sound hokey to some, but is just one option to solve the issue where you are and with what you have. 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. You are using an out of date browser. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. Be sure to disable autotune and remove the O2 sensor before it dies. 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. I have not yet got it figured out. I want to register an account for free right now! 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. Install the throttle linkage to the Sniper EFI throttle body. 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. It works fine. You have to angle it to help the throttle cable get around the booster. CTS (Coolant Temperature Sensor) - Reads engine temperature. It does not look like anything particularly superior in concept. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. EFI Systems based on Holley's world-class Dominator and HP ECU's. But this also makes me wonder what you did for the O2 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. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. The fuel pump question is the tough one. Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . So much it could be. Affiliate. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. I think installing a wide band O2 sensor in the manifold(s) is a great idea. 29. Full time feedback from the sensor is what the computer uses to refine the fuel table. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. 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. $119.95. 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). This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. 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). Late to the party but here's where mine are installed. The very front would be the safest place. 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. For a better experience, please enable JavaScript in your browser before proceeding. Other? 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. 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. Once the tune is complete, the O2 sensor can be defeated or . Got a picture? They have been working out well for a few years now. All times are GMT-6. This Video Shows Ideal O2 Sensor Placement! There can be leftover debris from manufacturing that have been washed down and are now clogging one. Found out that it was due to rfi/emi. I will be starting mine up this month, I hope it goes well, good luck to you. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! Runs like a champ now. I hope that the next F/2F header is more O2 sensor friendly. I'm guessing by snail, that's another name for the riser? 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. 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. Have to replace head gasket. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. Sniper EFI Releases new Stealth 4150 Models! Sniper EFI Installation Guide. 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. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? the Hamilton 212 pump is maxed out at about 4600 rpms, however it will provide about 10x the thrust that the berkly it is not as fast but haul much more load and work way better in white water. It does not work with the Sniper EFI oxygen sensor. 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. Still needs a EFI pump and return line. I purchased the Holley HP MPFI system and went to the lake with it. You are using an out of date browser. Idle and off-idle performance (particularly as the engine goes into gear.) Wondering how you are progressing with this? : For registered members this ad will NOT show. is donald smith still alive; julie grant court tv cheerleader 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. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. The Sniper EFI throttle-body drops in place of your . Features: . Newer ECMs have all the options to configure these functions. Homemade body parts replace the originals as they rot away but it's a 40 on the inside. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. 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. Then if that doesn't work call the tech line they are great! Specs. Holley Sniper EFI Wideband Oxygen Sensor. Sniper EFI Releases new Stealth 4150 Models! I have a 74 bronco, 302, mild cam. The O2 sensor burned out immediately. Categories. Everyone else was backordered several months. When buying the Holley Sniper EFI kit, you've got two basic options. While the Sniper has an absolutely outstanding internal ECU, the current model does not offer any laptop programmability. Part Number: 510-554-155. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. QFI-500 Oxygen Sensor. If the indicator reads "LOW Err" double check the connection to the CTS. 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? 29. Maybe going all the way to the front is the way to go? (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. 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.). Thanks for that, Danny. 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. Sensors that are installed in an exhaust must be connected to a properly functioning controller during engine operation 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. This page was generated at 08:35 AM. so far so good love the smooth power and easy starts. Everything about the fuel prime shot can be adjusted. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. Phil said water would still get up over the snail and knock out the sensor. Only a few hours on the motor but so far so good. Will I be able to run both systems off of one fuel pump? Master ASE tech since 91. If you're thinking that you've read everything above and are ready to toss the carb on your marine engine then take this handy quiz to make sure! Did you use the Holley fuel pump and have you had any issues with it? If a cruiser with enclosed engine compartment, not a lot you can do to eliminate water or at least water vapor in the exhaust. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. I want to register an account for free right now! (If I am incorrect I heartily invite your comment at the bottom of this article!) I will keep the in-line pump for a spare. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. Thanks guys. You will still get some water on the engine side of the snails, mainly at low Rs. 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. Menu. Welcome to Club Cobra! To take advantage of all the site features, please take a moment to register. Marc, you don't mention which system you installed but the Holley systems are fully configurable. He also explains how to properly install them. The truck started fine after install, and ran down the road ok. I have searched thru the forum as much as I can, with not much luck. I would send an Email to Chris at EFIsystempro. Some parts are not legal for use in California or other states with similar regulations. What exhausts are the best? While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. 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. ), 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. 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. Well an update on the Sniper install. . This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. A 90-degree V-6 has three shared crankpins set 120 degrees apart. 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. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. It is possible for the ECU to have an internal failure that can kill O2 sensors. The Sniper EFI throttle-body drops in place of your . When it did keep running, the headers all started to smoke. 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). 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. Given the traditionally poor fuel economy of carbureted marine engines, we feel your pain. 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear. 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. Part# 554-155. I would back-burner the ignition control questions until you get the fuel injection working. Do you recommend in-tank or external fuel pump? I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. Items 1 - 21 of 21 Items. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. Add to Cart . If this is a first time effort, find a tuner in your area with marine experience. He had one there that was run on a dyno then the fuel map was set and shipped back. Howell indicates that this adapter was designed for the Chevy type Mercruiser manifold but that it should work on any similar marine wet manifold. $132.95. Part# 534-199. 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. Throttle body mounted ECU - no extra boxes to mount. you don't want to read that loss. George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. I received my replacement TPS and O2 sensor. It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. Followed all the instructions to the letter. Put an end to cold start issues, hesitations, vapor . 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. Add To Cart. 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. All sensors are tested to ensure they accurately report critical engine data to the . It will crank and run great for 2-15 seconds then die. Everyone raving about customer service is telling the truth! Fuel economy went from 12.5 to 13.5 gph to 10 gph. Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. EFI EFI kit electronic fuel injection. Without Headers Steamers location (above) is perfect, up close to the engine where you . 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? By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. Can anyone share their experiences with this type of setup? 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. Capability Range: Professional Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. For the most part, the small harness is plug-and-play. What I installed on the motors was the Holley HP 19lb Holley Injectors the Holley 522-198 duel sync distributors with the MSD Digital 6A and the MSD Blaster 2 coils. 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. Staff Writer. (probably with the edelbrock marine 2506 intake). Followed all the instructions to the letter. Stock manifolds? 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. Was in marine engineering for years. Seems to have more low end tq and is much smoother power through out the rpm range. The sniper fit perfectly on the intake. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. 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.