Conditions when closed loop o2 should be turned off. : For registered members this ad will NOT show. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. The spark must be manually tuned. The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. Douglas Cline. It works fine. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Staff Writer. Let me know how I can be of assistance. Running? The Sniper will do that. 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. Warranty Information. Part Number: 510-554-155. Capability Range: Advanced 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. You have to angle it to help the throttle cable get around the booster. 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. YES! The very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. I want to register an account for free right now! There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues. But you have to get it tuned. . away. 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. 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. holley efi. 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. 2014 FJ Cruiser - White - 4X4 - Loaded - . It flows 850 cfm and can support up to 650 horsepower. Q1. Thanks guys. p.s. Thanks for the feedback on this adapter, Donald. Visit their website for more details. I did--- Save your money and piece a fuel it together. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Add to Cart . Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. For a better experience, please enable JavaScript in your browser before proceeding. Maybe my manifolds leaked the inside between the snail and the log?? 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. Has anyone run an O2 sensor in an EFI on a marine engine? 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. 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. 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. 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. Holley EFI. Free ground shipping regardless of order size! 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. Capability Range: Moderate The plan is to 'learn' a fuel\Timing curve with a closed loop. Holley EFI Oxygen Sensor. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. Sep 14, 2021. The O2 sensor burned out immediately. Are you running the latest software? I wanted to let you all know, I have modified a mercruiser Cool Fuel Gen 3 module(mounted on the engine) to provide fuel to a sniper. Holley EFI has the solutions you need to get your project up and running better than ever! WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. I had the pink ecu signal wire connected to a bullet connector on the passenger side . Jan 20, 2019. Then they had it repaired and back to me in 5 business days. It could be an instant fix. 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. The truck started fine after install, and ran down the road ok. The oxygen sensor should be mounted at a point where it can read a good average of all the cylinders on one bank. Idle and off-idle performance (particularly as the engine goes into gear.) If a cruiser with enclosed engine compartment, not a lot you can do to eliminate water or at least water vapor in the exhaust. Your BluePrint Engine will be equipped with a Holley model 550-510, or 550-511 (identical except for finish color) on 4150 flanged intake manifolds. Removed all the unused wires from harness and wrapped all the remaining wires and harness with rfi shielding tape. well I have installed the Sniper on my 460 KEM (Ford) marine motor. I've installed several of these adaptive EFI's on cars with great success. Marc, you don't mention which system you installed but the Holley systems are fully configurable. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. New 100 owner, long time cruiserhead - https://forum.ih8mud.com/threads/new-100-owner-long-time-cruiserhead.1300238/. It does not work with the Sniper EFI oxygen sensor. 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. George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. Capability Range: Advanced Brand: Holley EFI Emission Code: 4 . The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. Full time feedback from the sensor is what the computer uses to refine the fuel table. 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. So far so good. (REGISTERED USERS DO NOT SEE THIS POST/AD! Capability Range: Moderate Any word on this? So I bought the progressive linkage but you then have . Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. 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. Capability Range: Professional See Details. 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. RPM going up and down , miss firing and backfiring. Be sure to disable autotune and remove the O2 sensor before it dies. For the most part each engine wants a bit of its own timing set-up IMHO, you boat owners with a 270HP 350 (or any other config) may want 350HP but upgrading it to that level will reduce or eliminate reliability. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. 74 FJ40 confined to the swamp. Much of the system is encased right inside the throttle bodyand that includes the ECU. CUSTOM ART FOR CUSTOM NEEDS. Late to the party but here's where mine are installed. If this is a first time effort, find a tuner in your area with marine experience. i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. The spark must be manually tuned. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. If you have long tube headers, mount the sensor approximately 6-10" after the collector. Note the temperature sensor mounted on the back of the driver side head in the above photo. Once the tune is complete, the O2 sensor can be defeated or . Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. Maybe going all the way to the front is the way to go? I have about 30 hrs on the unit and it just keeps getting smoother with every hr of run time. Systems that were already designed for marine efi. No worse than taking the reading in the intake manifold cross over. I will be starting mine up this month, I hope it goes well, good luck to you. 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. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. A replacement clamp on would be an easy change out. Register now for free!) This is great information that can only get you closer to an ideal solution. Look at the bottom.. The throttle body has a built in fuel pressure regulator set at 58.5 psi. Not sure how well the sensor likes being that close to the port. For gourmands, night markets not only offer scrumptious small . Do you also recognize that the O2 sensor that is required for closed-loop operation will not survive in the "wet" manifold used by most marine engines, and that to install a device to protect the O2 sensor from this moisture may require the removal, machining, and replacement of the exhaust manifold? I wouldn't say "never", but the last time I asked that specific question I was told it wasn't anywhere on the horizon. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. I have tried several different settings to get it going, no luck. 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. There was a 1.5 point difference in afr between banks. EFI System Pro had everything I needed for my EFI upgrade. Any exhaust down at engine level or lower will definitely get at LEAST some steam. If you call, they usually let you put in your name and they get back to you. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. MAP Sensors. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. Will I be able to run both systems off of one fuel pump? I have searched thru the forum as much as I can, with not much luck. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. The World's largest Hopefully this one lasts longer than the original. The adapter does require the removal of the manifold and some machining but it allows the O2 sensor to be placed into the exhaust flow but protects it from the water exiting the block. I think installing a wide band O2 sensor in the manifold(s) is a great idea. 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. 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 . In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . Specs. On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. blue doberman puppies. 3. Sort. Waiting for spring to put back together. Sniper EFI 4500 Marine. However, overcoming that whole idle/off-idle transition (mentioned above) is going to be the challenge. Spray a rag down pretty good with brake cleaner. 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, Newer ECMs have all the options to configure these functions. 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. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. Sort. 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. This was for MPFI. 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. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. I installed the adapter and elbow so it's at an angle above the entry point. So please, If you have problems registering or can't log into your account, please. Find a lower price anywhere and we'll beat it by 5%! Other than the constraints provided in the article above I see no reason why this wouldn't be a great upgrade. 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. The in tank pump is quieter, will normally run cooler and should last longer. I tried holley tech support, no answer and put on hold for hours. 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. Welcome to ClassicBroncos! Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. The engine RPM when closed loop o2 will begin. 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. a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . Yes, this is an old thread, but it's an old unit. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. It is possible for the ECU to have an internal failure that can kill O2 sensors. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. Thanks again for writing! 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. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. Wideband Oxygen Sensor Extension Cable. Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. 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. Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. Use a return fuel line. I installed a holley sniper kit. 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 very front would be the safest place. Wondering how you are progressing with this? Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. Given the traditionally poor fuel economy of carbureted marine engines, we feel your pain. 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. 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. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: 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. 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. Initial Calibration in Basic Configuration. We also use content and scripts from third parties that may use tracking technologies. 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. Emissions. JavaScript is disabled. Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . For the most part, the small harness is plug-and-play. The fuel pump question is the tough one. I have searched thru the forum as much as I can, with not much luck. 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. If you let it cool down again, does it start up fine? Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. Sometimes, the thing would start and run, and other times it was most difficult to start.
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running holley sniper without o2 sensor