The Sniper EFI throttle-body drops in place of your . Waiting for spring to put back together. From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. All of the wiring begins at the throttle body and connects outward from there. Do you recommend in-tank or external fuel pump? Stock manifolds? To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. Holley EFI Oxygen Sensor. Seemed to be getting too much fuel on hot starts and flooding out, could get it to go by putting it to the floor while cranking as Action mentioned. 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. However, there's a good chance you will want to add a wideband O2 sensor at some point, in order to give the MegaSquirt more tuning information. If you let it cool down again, does it start up fine? Price Point: $$$. Mine is right where Steamers is, and works well with my AFI TBI. I recommend popping for the Master . Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after Sensors that are installed in an exhaust must be connected to a properly Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. I found this in the instruction manual for the older commander 950 system. 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. 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. 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. It does not look like anything particularly superior in concept. MAP Sensors. Master ASE tech since 91. check out the. This page was generated at 08:35 AM. Homemade body parts replace the originals as they rot away but it's a 40 on the inside. May 1, 2018 They want you to angle it to keep it from fouling. I am just now ready to do the tuning this weekend. Then they had it repaired and back to me in 5 business days. you don't want to read that loss. I purchased the Holley HP MPFI system and went to the lake with it. Phil said water would still get up over the snail and knock out the sensor. Holley sent him a new one for free. If I am reading your post correctly you are using two separate o2 sensors when using headers ? Sorry for the late reply, Douglas. Boats don't cruise at 60mph up and down hills. I have a boat with twin 3.7 Mercruisers. 29. 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. KAYAK searches hundreds of travel sites to help you find and book the hotel deal at O2 Hotel Taipei Main Station that suits you best. Let me know how I can be of assistance. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. turn on the ignition.but do not start the engine. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. It's hallmark is its simplicity--but in this case it is also it's shortcoming. Adam. I will get a new 02 sensor before I swap back to the orange box. Do you offer a USCG fuel pump kit? Items 1 - 21 of 21 Items. Newer ECMs have all the options to configure these functions. The spark must be manually tuned. If you call, they usually let you put in your name and they get back to you. Good luck! They have been working out well for a few years now. So far so good. In order to do this, it heavily relies on proper O2 sensor placement. The World's largest It may not display this or other websites correctly. 534-199. Shop Oxygen Sensors at Summit Racing. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. What you are able to accomplish with a Sniper is done exclusively through the setup wizard application on the 3.5-inch handheld.The Temrinator is designed to be set up with it's own setup wizard on the same 3.5-inch handheld display--but since it has a stand-alone ECU, it can also be fully programmed via the Holley laptop software. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. 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. YES! 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. There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. What is your fuel pressure at the carb during crank? Dec 28, 2016. . What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. If this could be disabled it would be much better. excessively rich mixtures), Mechanical shock (e.g. I hope that the next F/2F header is more O2 sensor friendly. Here is one on start up tuning. : For registered members this ad will NOT show. Bolt-on carburetor style EFI for your classic car or truck. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . $108.95. But it is going to be a little tricky. I installed a holley sniper kit. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. Yes, this is going to be an added expense, however, it will help guarantee your success. . Sniper EFI Releases new Stealth 4150 Models! You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Runs like a champ now. Will I be able to run both systems off of one fuel pump? I was mocking it up at the time. Next, the new unit was installed onto the manifold. Installed the sniper/MSD combo on my mildly built 460 KEM. EFI System Pro also has a good bit of tech info on their website. Prime cannot be adjusted on this old unit. 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. Advanced throttle body injection systems capable of transmission control and more. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. Specs. Warranty Information. 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. Has anyone run an O2 sensor in an EFI on a marine engine? 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. The new Exhaust manifolds will have wideband O2 bungs for tuning. Holley Sniper O2 sensor replacement. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). There is no problem getting this tuned and then running open loop. Any word on this? :-), I started using OMC and Volvo Penta pumps for my conversion. 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. Tech Resources. Part# 534-199. Yes! Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. Also the progressive link. is donald smith still alive; julie grant court tv cheerleader EFI System Pro had everything I needed for my EFI upgrade. 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. Part# 550-511. 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. I've installed several of these adaptive EFI's on cars with great success. By bypassing the built in pressure regulator in the fuel module(allowing full flow and pressure), using 3/8 hard lines to/from the sniper to meet CG rules( no soft lines on the engine block)using the snipers fuel pressure regulator, This is as close as I can come to safe. I have a 74 bronco, 302, mild cam. It does not work with the Sniper EFI oxygen sensor. a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . 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. The light shines in the darkness, and the darkness has not overcome it. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. As far as a sensor goes, absolutely nothing. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. (If I am incorrect I heartily invite your comment at the bottom of this article!) Purely coincidence about the '2300' number. 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. And the relay and fuse were mounted along the firewall. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! so simple check first, whats the fuel pressure? If you've done some automotive fuel map tuning before, you can likely overcome this challenge. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. Add To Cart. 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. For a better experience, please enable JavaScript in your browser before proceeding. Copyright 2022 Holley Performance Products, Inc. All right reserved. So I bought the progressive linkage but you then have . As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. 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. 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. Find a lower price anywhere and we'll beat it by 5%! 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. Marc, you don't mention which system you installed but the Holley systems are fully configurable. holley efi. Douglas Cline. We may earn a small commission from affiliate links and paid advertisements. 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. 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear. I tried holley tech support, no answer and put on hold for hours. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. You can selectively provide your consent below to allow such third party embeds. From there, our highly trained factory refurbish technicians flow the original fuel injectors. 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. 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. Full time feedback from the sensor is what the computer uses to refine the fuel table. I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. Increasing efficiency is always a good idea. Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. Yellow Cold! 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. Are you holding your RPMs back with the MSD for some reason? 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. Staff Writer. Yes, this is an old thread, but it's an old unit. I did--- Save your money and piece a fuel it together. The wide band O2 sensor is required for initial running and calibration. He knows his stuff, gets back quickly to you, etc. 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. I would back-burner the ignition control questions until you get the fuel injection working. 74 FJ40 confined to the swamp. A replacement clamp on would be an easy change out. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. Are you running the entire system? Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! Holley EFI has the solutions you need to get your project up and running better than ever! Thanks guys. . Some parts are not legal for use in California or other states with similar regulations. Then if that doesn't work call the tech line they are great! 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. Sort. Capability Range: Moderate Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. Register now for free!) Thinking about this I think this will work very fine! functioning controller during engine operation. Add to Cart . 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. A 90-degree V-6 has three shared crankpins set 120 degrees apart. Capability Range: Professional 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. Welcome to ClassicBroncos! 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. You must log in or register to reply here. I will be starting mine up this month, I hope it goes well, good luck to you. Sorry for the late reply. Sort. Conditions when closed loop o2 should be turned off. All sensors are tested to ensure they accurately report critical engine data to the . 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. Now the lower cost Holley Sniper advertised for March 31 2016. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. 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. The very front would be the safest place. Wideband Oxygen Sensor Extension Cable. I have tried several different settings to get it going, no luck. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. 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. Jun 7, 2021. If this is a first time effort, find a tuner in your area with marine experience. Everything about the fuel prime shot can be adjusted. My question is concerning what happens a year later, when I have a top-end swap . I will keep the replacements as spares. You'll also notice that the firing order is 1-6-5-4-3-2. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. Description. Stay up to date with the latest releases, events, promotions and more. For a better experience, please enable JavaScript in your browser before proceeding. May God's grace bless you in the Lord Jesus Christ. The Sniper will do that. Yellow Init In First shown for an instant when the system is powered on. You really want a bigger engine. Product Q&A . 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.