I will be starting mine up this month, I hope it goes well, good luck to you. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. I have not gone back in to try to fine tune them. I have a 74 bronco, 302, mild cam. 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. I would back-burner the ignition control questions until you get the fuel injection working. If you have long tube headers, mount the sensor approximately 6-10" after the collector. 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. Mine is right where Steamers is, and works well with my AFI TBI. New 100 owner, long time cruiserhead - https://forum.ih8mud.com/threads/new-100-owner-long-time-cruiserhead.1300238/. Idle and off-idle performance (particularly as the engine goes into gear.) Is this a good upgrade? The fuel module is self contained with water jacket cooling and contains the low and high pressure pumps. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? 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. Bolt-on carburetor style EFI for your classic car or truck. Holley EFI Oxygen Sensor. On my system, I machined in the O2 sensor right between the snail and the manifold of a . 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? Holley EFI has the solutions you need to get your project up and running better than ever! Innovate Motorsports HBX-1 Bung Extender. Are you running the entire system? However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Add To Cart. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. the engine not running. This Video Shows Ideal O2 Sensor Placement! : For registered members this ad will NOT show. 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. While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. replaced my original terminator x sensor that was mounted in an exhaust that took on some water and killed the original sensor. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. I have a 74 bronco, 302, mild cam. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. Did you use the Holley fuel pump and have you had any issues with it? (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Does an yone have a pic of the O2 sensor in their exhaust? Distributor and ignition box? I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. For the most part, the small harness is plug-and-play. Part# 50-5009QFT. Good luck to all. 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. I've installed several of these adaptive EFI's on cars with great success. I did--- Save your money and piece a fuel it together. For now I have a genuine bosch O2 and Standard Automotive TPS installed. 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. Capability Range: Moderate Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. Will I be able to control my ignition timing with the Sniper? Register now for free! Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. Do you offer a USCG fuel pump kit? Its the Holley Pro Jection TBI mentioned by the above poster. You'll also notice that the firing order is 1-6-5-4-3-2. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. 5. 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. 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). I purchased the Holley HP MPFI system and went to the lake with it. 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. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. Have engine apart and head checked and cleaned at machine shop. 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. This page was generated at 08:35 AM. 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. Pricing was reasonable, shipping was prompt and Chris helped me with a wiring question during my install. Sort. Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. Anti-Seize pre-applied to sensor threads. I received my replacement TPS and O2 sensor. Find a lower price anywhere and we'll beat it by 5%! 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. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. 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. the motor has the following mods, Aluminum heads, Performer intake, Sniper and MSD ignition module. They are about 4 inches long, in-line between the log and manifold. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Great Article. The engine RPM when closed loop o2 will begin. 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 want to register an account for free right now! Throttle body mounted ECU - no extra boxes to mount. EFI EFI kit electronic fuel injection. We use cookies to enhance your experience while using our website. It turns out that the loading generated a propeller in the water is significantly different than wheels on pavement, so much so that the map has to be tuned differently. The new Exhaust manifolds will have wideband O2 bungs for tuning. When buying the Holley Sniper EFI kit, you've got two basic options. Your talking flames at that point, and it will definitely have an effect on the reading. He had one there that was run on a dyno then the fuel map was set and shipped back. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. May 1, 2018 They want you to angle it to keep it from fouling. Full time feedback from the sensor is what the computer uses to refine the fuel table. PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. Stock manifolds? Thanks. 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. I recommend popping for the Master . Pay close attention to the instructions on O2 sensor placement. I installed it without O2 sensor, adjust on the fly. The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. It will flood itself out and won't start back, just crank and crank. Each engine has the Holley marine 2 barrel carburetor. 1985 fj60 (sold back to Toyota), 1997 fzj80, 1971 fj40 with 75 2F. 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. *Possible delays due to Covid-19 click for more information. 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. 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. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. Replaced and gapped to .45 all spark plugs. Bolt-on carburetor style EFI for your classic car or truck. Apr 13, 2017. with the extension. 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. 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. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. I installed a holley sniper kit. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 100% identical. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. 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. Bolt-on carburetor style EFI for your classic car or truck. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. . Only show this user. 2023 Holley Performance Products, Inc. All Rights Reserved. Any word on this? But you still risk a little water running back at low Rs. Super helpful and knowledgeable. My first install was on a stock manifold and I installed it in about the same spot Steamer (above) did, except 180 degrees the other way, facing towards the front of the vehicle. I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. $132.95. The target A/F value based on load or MAF cfm, and engine speed. Aftermarket headers are pretty much the only safe way to run an O2 sensor. 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. If the indicator reads "LOW Err" double check the connection to the CTS. Capability Range: Professional Fuel prices at the marina are usually about a dollar a gallon more than at the local Racetrac/Wawa/wherever, and even more if you wisely opt for ethanol-free fuel. For a better experience, please enable JavaScript in your browser before proceeding. That is defacto step one in trouble shooting fuel injection systems. Some of the landlubbers who are reading this may not realize that many inboard engines utilize what is called a wet exhaust, pushing the water from the engine block into the exhaust and then back into the lake/river/sea on which they float. Capability Range: Advanced Welcome to ClassicBroncos! Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. I will be calling around to see if I can find someone to help that has experience. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. I have searched thru the forum as much as I can, with not much luck. Part # HM206. test the sensor.. for a basic pass/fail of the sensor. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. I will let you know what happens. The engines are rated at 170 hp each. They have been working out well for a few years now. Got a picture? Wiring the Holley Sniper EFI system is equally easy. Thanks for that, Danny. Seems to LEARN much faster than the Fitech did. AFR was 19 area. Holley part number 554-155. 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. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). 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. 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). Once the tune is complete, the O2 sensor can be defeated or . It is possible for the ECU to have an internal failure that can kill O2 sensors. Sent unit back to Holley. This really applies to any O2 sensor regardless of EFI system. All I can say is it made a completely different motor out of the 460, 39 degrees out and starts within 2 revolutions power is super smooth throughout the rpm range (idle to 4100rpms 212 Hamilton with 4.0 turbo impeller) has about 6 hrs of learn time. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. Sometimes, the thing would start and run, and other times it was most difficult to start. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. Wideband Oxygen Sensor Extension Cable. I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. Have to replace head gasket. It will crank and run great for 2-15 seconds then die. Initial Calibration in Basic Configuration. The Tech Tips and discussions are also great! 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. Can anyone share their experiences with this type of setup? See Details. so far so good love the smooth power and easy starts. Precisely Adam. Why? 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. The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! Holley Sniper O2 sensor replacement. I hope that the next F/2F header is more O2 sensor friendly. Not sure how well the sensor likes being that close to the port. The spark must be manually tuned. The truck started fine after install, and ran down the road ok. Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. I will get a new 02 sensor before I swap back to the orange box. Looking for some advice pertaining to Holley Sniper and Tire Size upgrades. No prime, but a second later it's ready to crank 'normally'. Jan 20, 2019. Running? CUSTOM ART FOR CUSTOM NEEDS. Marc, you don't mention which system you installed but the Holley systems are fully configurable. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. 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. 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. 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. So far so good. Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. You can selectively provide your consent below to allow such third party embeds. i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. He also explains how to properly install them. Sniper EFI Installation Guide. 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. Be sure to disable autotune and remove the O2 sensor before it dies. . #3. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Sniper EFI Quadrajet Marine. Who knows. So much it could be. On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. non biased Shelby Cobra related site! Sniper EFI Releases new Stealth 4150 Models! My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. I'm guessing by snail, that's another name for the riser? Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? Holley EFI has the solutions you need to get your project up and running better than ever! Was in marine engineering for years. The fuel pump question is the tough one. Part # 554-155. Yellow Init In First shown for an instant when the system is powered on. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. Sadly, no. You shouldn't feel too bad about that lack of knowledge, because many boat owners either don't realize that the moisture present in their wet exhaust manifold will kill the wideband O2 sensor required by an EFI system. Since your existing low-pressure fuel system is not going to work with the Sniper EFI System this puts you in the unenviable position of choosing between USCG compliance or EFI. It only runs rich on start up for a second due to the prime, after start it runs great. Maybe going all the way to the front is the way to go? Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! blue doberman puppies. The adapter plate installs in between the exhaust manifold and the riser/elbow allowing for the water jackets to still be in place and an o2 sensor to be installed in the still dry exhaust gasses. Part# 550-511. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. 10 min read. Advanced throttle body injection systems capable of transmission control and more. Add to Cart . Holley EFI requires several pressure inputs in order to run an engine. is donald smith still alive; julie grant court tv cheerleader This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. Q3. But for just over $10 and two simple configuration changes you can switch to a progressive linkage that opens only the two primary barrels at first and then brings in the secondary barrels at a later point. Has been since the 80's. Hooker BlackHeart Oxygen Sensor O2 Bung 2.25" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 2.5" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 3.0" Clamp-On Style, Holley Oxygen Sensor O2 Bung Weld-In Style. O2 sensors are water proof. We may earn a small commission from affiliate links and paid advertisements. Price Point: $$$. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. 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. 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. It appears that its a tuning issue. Add To Cart. It's fast, simple and absolutely free. Part Number: 510-554-155. 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)? Holley EFI Oxygen Sensor. He knows his stuff, gets back quickly to you, etc. For gourmands, night markets not only offer scrumptious small . MAP Sensors. 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. Use a return fuel line. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. JavaScript is disabled. 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. It works fine. 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. Will I be able to run both systems off of one fuel pump? The Holley Sniper system sells for $999.95, installs in under 2 hours, and requires only an O2 sensor, a temp sensor (both included), an electric return-style fuel pump, and four-wires to connect.. Quote Reply Topic: Holley Sniper Posted: Jan/05/2022 at 2:01pm . It does not look like anything particularly superior in concept. . You must log in or register to reply here. 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. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. These types of adjustable on-delay timer relays are on sites like Amazon for less than $10 up to $15. PS, Once someone has a good 270/350 tune, everyone can use it. Shop Oxygen Sensors at Summit Racing. Has anyone run an O2 sensor in an EFI on a marine engine? If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. Phil said water would still get up over the snail and knock out the sensor. - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. Jun 7, 2021. It may not display this or other websites correctly. Advertising . You should then have at least 18-24" of pipe after the sensor. It will not fit on round or oval risers without a suitable flat area. well I have installed the Sniper on my 460 KEM (Ford) marine motor. 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. Specs. Good luck! I've seen O2 sensors in water jacketed headers that have worked fine for years. Sniper EFI Releases new Stealth 4150 Models! Most of you only need to tune 4 points, idling around the marina, part throttle - pulling the rope tight, 1/2-3/4 throttle - cruise, and YeeHaa - WOT. This doesn't apply to race boats. The test run was great, they have never run so well even when they were new with carbs. 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. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. Yes, this is going to be an added expense, however, it will help guarantee your success.
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