My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. Capability Range: Professional Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. looking at doing the same. Tech Resources. Holley EFI has the solutions you need to get your project up and running better than ever! Once the tune is complete, the O2 sensor can be defeated or . i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. 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. Other countries likely have simmilar approval processes for marine engines. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. 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. The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. 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. Ran about 5 seconds and died. The light shines in the darkness, and the darkness has not overcome it. The fuel pump question is the tough one. 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. Systems that were already designed for marine efi. Yes! away. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. The first option is to just buy the injector body and the controller with the wiring harness and sensors. 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. 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. . I am happy with Holleys no hassle replacement of the parts. We also use content and scripts from third parties that may use tracking technologies. Jan 20, 2019. So please, If you have problems registering or can't log into your account, please. Bolt-on carburetor style EFI for your classic car or truck. 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. Or maybe I could just use a piece of spare/junk exhaust tubing, and bolt it to the manifolds and add a weldless O2 bung to it. Part# 550-511. 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. Other? Capability Range: Professional 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. Specs. I bought a new holley sniper , dual sync dist., coil, and holley in tank fuel pump, When engine got hot it would go crazy. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. turn on the ignition.but do not start the engine. As far as a sensor goes, absolutely nothing. This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. The other thing I want to overcome is the fuel return line; my harbor master says that I can connect my fuel return line to my CAV (lucas) gasoline filter, it has 4 connection, now only 2 are used. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. *Possible delays due to Covid-19 click for more information. Hopefully this one lasts longer than the original. I installed the adapter and elbow so it's at an angle above the entry point. . 29. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Has anyone run an O2 sensor in an EFI on a marine engine? YES! http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. 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. Plug into the coolant temperature sensor. . 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. Bolt on 4150 Flange Carburetor Replacement. I also capped off the regulated return line with a hose, clamps, and chamfering bit. #3. It may not display this or other websites correctly. There was a 1.5 point difference in afr between banks. It does not work with the Sniper EFI oxygen sensor. Then they had it repaired and back to me in 5 business days. Idle and off-idle performance (particularly as the engine goes into gear.) To simplify . Will I be able to control my ignition timing with the Sniper? Wiring the Holley Sniper EFI system is equally easy. Register now for free!) From there, the idea is that it will self-tune to the requirements of the engine. 534-199. But MAP sensors are very easy to physically implement and are inexpensive. 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. Yeah, it may sound hokey to some, but is just one option to solve the issue where you are and with what you have. Seems to have more low end tq and is much smoother power through out the rpm range. There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. 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? 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. 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. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. He knows his stuff, gets back quickly to you, etc. Holley recommends a 3/8" fuel supply line. As far as warranty goes, Holley products are covered by a 90-day warranty against defect in material or workmanship. On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. 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. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. Classifieds - Engine/Transmission/Transfer Case, BJ42 | FJ43 | BJ44 | FJ45 | FJ45LV | HJ47, North American Clubhouses - Central Region, CA.AB- Rocky Mountain Land Cruiser Association, CO/WY- Horsetooth 4 Wheelers Cruiser Club, TX- Lone Star Land Cruisers - Austin Chapter, TX- The White Trash of the Elwood Chapter, CA.BC- Okanagan-Similkameen Land Cruisers, NV- Battle Born Cruisers of Northern Nevada, Vendors: Accessories - Electronics - Recovery. In this case, the prime shot is good for cold, but too much for warm. Are you running the entire system? The wiring was a bit of a mess. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. Found out that it was due to rfi/emi. If you are not running the latest software stop guessing and go download it. 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. Sniper EFI Installation Guide. Some logs have water up to just short of the port. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. Anything else is going to be a frustrating recipe for for failure. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. Wideband Oxygen Sensor Extension Cable. 4. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. Thanks. Bosch 17025 Oxygen Sensor #1 Best Seller . 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. Maybe this one has a shorter cable? Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . . Greatest struggle is the shift interrupt. 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. Q2. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. May 1, 2018 They want you to angle it to keep it from fouling. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. Welcome to ClassicBroncos! 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. You need to intimately know the system you are using, its capabilities and limitations, install it correctly and have it tuned with someone with experience specific to marine applications. Are you running the latest software? Can anyone share their experiences with this type of setup? While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. 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.). Add To Cart. When buying the Holley Sniper EFI kit, you've got two basic options. Has been since the 80's. PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. As far as spark control, the Sniper will let you tune those 4 points, nothing else will. However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. A third option would be to run your EFI system without an O2 sensor at all. It is possible for the ECU to have an internal failure that can kill O2 sensors. Joe, where did you end up installing the o2 sensor on your setup? They are about 4 inches long, in-line between the log and manifold. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. Oxygen Sensor, Replacement, Sniper EFI, Terminator X, 3-wire, Thread-in, Each See More Specifications | Check the Fit. The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. The O2 sensor burned out immediately. #1. This is great information that can only get you closer to an ideal solution. . 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. If you find that please let us know. But it is going to be a little tricky. On my system, I machined in the O2 sensor right between the snail and the manifold of a . 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. This is made by Innovate, the guy that runs the Holley EFI forum HIGHLY recomends AND uses them himself, I use them, my o2 on my wideband Innovate, kept going bad, a 4.2 Bosch o2, put this on both my Holley HP NTK sensor & the wide band, been 2 years now & lots of driving, all good, Heat-Sink Bung Extender (HBX-1) - P/N: 37290 The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. 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 very front would be the safest place. Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. Copyright 2022 Holley Performance Products, Inc. All right reserved. Throttle body mounted ECU - no extra boxes to mount. 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. Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. 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. 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. He had one there that was run on a dyno then the fuel map was set and shipped back. 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. Capability Range: Moderate I have not yet got it figured out. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. If the indicator reads "LOW Err" double check the connection to the CTS. Replacement Sniper and Terminator X O2 Sensor. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . It may not display this or other websites correctly. 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. Adam. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. 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. Mine is right where Steamers is, and works well with my AFI TBI. I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. 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. 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. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: This page was generated at 08:35 AM. Maybe my manifolds leaked the inside between the snail and the log?? non biased Shelby Cobra related site! One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . The Sniper EFI throttle-body drops in place of your . My hand is holding the connector to the sensor. Holley part number 554-155. It does not look like anything particularly superior in concept. Everyone else was backordered several months. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. The engine RPM when closed loop o2 will begin. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. 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. We use cookies to enhance your experience while using our website. THen you have to determine if you want 02 readings from one cylinder, or in the case you just mentioned mostly one cylinder, average of 4 cylinders on one bank or the other, or average of all 8 cylinders. 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. It's hallmark is its simplicity--but in this case it is also it's shortcoming. 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. Free ground shipping regardless of order size! 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. I am concerned about the O2 sensor consideration, but in the end isn't the carburetor situation open loop? Capability Range: Advanced . Bolt-on carburetor style EFI for your classic car or truck. Only a few hours on the motor but so far so good. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! 100% identical. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. Full time feedback from the sensor is what the computer uses to refine the fuel table. 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 Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. 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. If there's anyone willing to read a bit and offer advice about what to do when doing a top-end swap (when you may be in a scenario with a new top-end that's the EFI isn't calibrated for AND you can't have an WBO2 sensor connected), please let me know. You are using an out of date browser. replaced my original terminator x sensor that was mounted in an exhaust that took on some water and killed the original sensor. Everything about the fuel prime shot can be adjusted. the engine not running. Advanced throttle body injection systems capable of transmission control and more. I'll let you know how it works out. No worse than taking the reading in the intake manifold cross over. Im almost at your exact same setup on a Redline 460/Berkeley pump but waiting to pull the trigger on the Sniper until I can pinpoint exactly where I can install the o2 sensor without the wet exhaust damaging it. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Who knows. I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. Super helpful and knowledgeable. 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. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. pull the sensor out of the exhaust. Next, the new unit was installed onto the manifold. :-), I started using OMC and Volvo Penta pumps for my conversion. EFI Systems based on Holley's world-class Dominator and HP ECU's. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. 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. Thanks for the compliment--we look forward to your feedback! You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. The test run was great, they have never run so well even when they were new with carbs. I am looking for a TBI with full sensors, mainly atmospheric for Sept and Oct and a Idle Air sensor for warm starts.I welcome your thoughts.Regards, 10 min read. RPM going up and down , miss firing and backfiring. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. 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 . 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. I am a competent mechanic and I have checked all the usual suspect items. The new Exhaust manifolds will have wideband O2 bungs for tuning. Have engine apart and head checked and cleaned at machine shop. And the relay and fuse were mounted along the firewall. I have about 30 hrs on the unit and it just keeps getting smoother with every hr of run time. But this also makes me wonder what you did for the O2 sensor. Homemade body parts replace the originals as they rot away but it's a 40 on the inside. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. I installed a holley sniper kit. 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. Taipei has dozens of world-class restaurants where gourmets can sample the most authentic Chinese cuisines. Without Headers Steamers location (above) is perfect, up close to the engine where you . Part # HM206. Holley EFI Oxygen Sensor. MAP Sensors. Now the lower cost Holley Sniper advertised for March 31 2016. The engines are rated at 170 hp each. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. My question is concerning what happens a year later, when I have a top-end swap . Holley EFI has the solutions you need to get your project up and running better than ever! It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? Seems to LEARN much faster than the Fitech did. YES! Does an yone have a pic of the O2 sensor in their exhaust? You have to angle it to help the throttle cable get around the booster. Menu. 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. Phil said water would still get up over the snail and knock out the sensor. 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. The spark must be manually tuned. Part# 534-199. They are the only ones got me a holley usb to can cable fast. The World's largest Prime cannot be adjusted on this old unit. 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. They have mods that help. The in tank pump is quieter, will normally run cooler and should last longer. 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. - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. CTS (Coolant Temperature Sensor) - Reads engine temperature. Staff Writer. Thanks guys. HP comes from torque and rpm and rpm breaks things and increases wear. The plan is to 'learn' a fuel\Timing curve with a closed loop. Pay close attention to the instructions on O2 sensor placement. p.s. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. When it did keep running, the headers all started to smoke. Have you visually verified that all your injectors are spraying? You must log in or register to reply here. Thanks for that, Danny. Can more detail be provided? 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. What motor is this on? George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. Emissions. Advanced throttle body injection systems capable of transmission control and more. Sort. I did--- Save your money and piece a fuel it together.

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