running holley sniper without o2 sensor

Maybe this one has a shorter cable? Affiliate. Specs. Was in marine engineering for years. https://www.efisystempro.com/efi-pro-hangout/sniper-installation-tips-holley-tom-kise, https://www.efisystempro.com/efi-prng-engine-startup-sniper-terminator-x-stealth. You must log in or register to reply here. I thought about adding some sort of extra protection but never did. Anything else is going to be a frustrating recipe for for failure. Sent unit back to Holley. Maybe my manifolds leaked the inside between the snail and the log?? The original Holley Sniper instructions are available on the Holley website if you have misplaced them. New 100 owner, long time cruiserhead - https://forum.ih8mud.com/threads/new-100-owner-long-time-cruiserhead.1300238/. I really dont want any issues on the whitewater lol As far as spark control, the Sniper will let you tune those 4 points, nothing else will. Capability Range: Moderate Most of Holley's EFI systems provide a Setup Wizard that builds a base configuration file that allows you to start the engine and operate the vehicle. I was thinking aluminum heads would run it up closer to 5,000 rpm. An O2 sensor is used when converting an engine to fuel injection and wanting to move from an "open loop" system to a "closed loop" system. I will keep the in-line pump for a spare. You should then have at least 18-24" of pipe after the sensor. After a few tries by jumping the starter solenoid I then realized the ignition key was in the off position. 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. It works fine. Waiting for spring to put back together. As far as a sensor goes, absolutely nothing. 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 you are not running the latest software stop guessing and go download it. It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. That sounds like one solution. Everyone else was backordered several months. so simple check first, whats the fuel pressure? If this is a first time effort, find a tuner in your area with marine experience. This motor would probably turn the berk to 6 grand and blow it out from a stop.Motor dyno'd on a carb @389 hp @ 4700rpm and 497 tq @3500. The Sniper EFI throttle-body drops in place of your . The ones in the Bosch box come without warranty. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. Part# 554-155. holley efi. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. 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. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. but I'm finding when running engines with holley sniper kits the the engines are very eratic ,the air fuel numbers are always changing drastically from one pull to . I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. 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. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. Holley EFI Oxygen Sensor. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! 5. A forum community dedicated to performance boat owners and enthusiasts. I think installing a wide band O2 sensor in the manifold(s) is a great idea. 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. For the most part, the small harness is plug-and-play. This runs in the area of $1000 and has everything you need for a basic install on almost any vehicle equipped with a four barrel carb. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Put an end to cold start issues, hesitations, vapor . Are you running the entire system? 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. Any word on this? Have engine apart and head checked and cleaned at machine shop. 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. Thanks. Sort. I have searched thru the forum as much as I can, with not much luck. The plan is to 'learn' a fuel\Timing curve with a closed loop. I have also picked up another .5 gallons per hr to about 9.25 gph. Find a lower price anywhere and we'll beat it by 5%! B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. It does not work with the Sniper EFI oxygen sensor. Joe, where did you end up installing the o2 sensor on your setup? The wiring was a bit of a mess. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. Menu. I hope that the next F/2F header is more O2 sensor friendly. 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. While the Sniper has an absolutely outstanding internal ECU, the current model does not offer any laptop programmability. Yes, this is an old thread, but it's an old unit. In the case of the car, you can generally get out and walk (run?) Your talking flames at that point, and it will definitely have an effect on the reading. I installed the adapter and elbow so it's at an angle above the entry point. JavaScript is disabled. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. Has anyone run an O2 sensor in an EFI on a marine engine? 4. Description. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . The engine RPM when closed loop o2 will begin. 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. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. Taipei has dozens of world-class restaurants where gourmets can sample the most authentic Chinese cuisines. Marc, you don't mention which system you installed but the Holley systems are fully configurable. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. You are using an out of date browser. It should be pretty straight forward what each of these values do. 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. We may earn a small commission from affiliate links and paid advertisements. 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. PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. I had a blue wire coming out of the firewall that met this need, but it was already hooked-up to the + side of the coil and the Duraspark box. Holley EFI has the solutions you need to get your project up and running better than ever! The engines are rated at 170 hp each. Do you recommend in-tank or external fuel pump? No worse than taking the reading in the intake manifold cross over. 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. I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. If the indicator reads "LOW Err" double check the connection to the CTS. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. 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. Sniper EFI 4bbl Marine. Newer ECMs have all the options to configure these functions. 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. MAP Sensors. 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. If you call, they usually let you put in your name and they get back to you. 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. It's a compact HP pump and cooler assembly. 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)? Previously, none of Holley's throttle body injection (TBI) systems, such as the Terminator EFI were USCG approved (even though the HP and Dominaor ECU's themselves are.) *Possible delays due to Covid-19 click for more information. 10 min read Video. 100% identical. 2014 FJ Cruiser - White - 4X4 - Loaded - . One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. 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. 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. 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. 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. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. The first option is to just buy the injector body and the controller with the wiring harness and sensors. The clamp-on that came with mine wasnt a good fit on my 2" pipe. 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. Stock manifolds? I want to register an account for free right now! Do you offer a USCG fuel pump kit? Part# 534-199. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. 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. Part# 50-5009QFT. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. 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. 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. Let me know how I can be of assistance. 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. Register now for free! Sorry for the late reply. 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. Part # 554-155. Staff Writer. Anti-Seize pre-applied to sensor threads. Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. 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. Items 1 - 21 of 21 Items. Found out that it was due to rfi/emi. 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. Find a lower price anywhere and we'll beat it by 5%! I have not gone back in to try to fine tune them. test the sensor.. for a basic pass/fail of the sensor. Good luck to all. 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. Pink switched power wire, this needs to be connected to a point that is 12V in run and while cranking. Categories. I don't have enough experience with marine applications to know exactly what it will take to solve this. But you have to get it tuned. The Fora platform includes forum software by XenForo. I have searched thru the forum as much as I can, with not much luck. The very front would be the safest place. I will keep the replacements as spares. Holley EFI. No one cares about your buddies old antiquated garden hose technology. Phil said water would still get up over the snail and knock out the sensor. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. 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. The throttle body has a built in fuel pressure regulator set at 58.5 psi. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. The very basic fuel and spark tables are the limiting aspect, Holley does offer advanced software for more precise tuning. Thanks for the heads up. It's hallmark is its simplicity--but in this case it is also it's shortcoming. There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. JavaScript is disabled. I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. The problem occurs when an excessive amount of oxygen makes its way from the intake port directly into the exhaust at idle and low engine speeds because of overlap. But it is going to be a little tricky. Then they had it repaired and back to me in 5 business days. This is the 02 sensor adapter I used. 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. I would prefer to run this brand new Holley EFI system in a closed loop, not set the fuel map, and use the O2 sensor as only a sensor. Sniper EFI Releases new Stealth 4150 Models! 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. Doesn't look like it will have an O2 sensor. I would send an Email to Chris at EFIsystempro. *Possible delays due to Covid-19 click for more information. p.s. This is great information that can only get you closer to an ideal solution. Is this a good upgrade? The Sniper will do that. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. The oxygen sensor should be mounted at a point where it can read a good average of all the cylinders on one bank. Add to Cart . 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. . My bet based on longer pump run, to make pressure, you have a leaking injector. 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. Holley EFI has the solutions you need to get your project up and running better than ever! 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. 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. Boats don't cruise at 60mph up and down hills. Conditions when closed loop o2 should be turned off. I am a competent mechanic and I have checked all the usual suspect items. Ideally I'd want the power plant running as efficiently as possible, but I'd sure like the benefit of EFI over carb. Pay close attention to the instructions on O2 sensor placement. 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. Some parts are not legal for use in California or other states with similar regulations. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . Adam. It works great where its at. I installed a holley sniper kit. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. . You have to angle it to help the throttle cable get around the booster. 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.). In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. 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. Is Holley working on a complete marine package or planning to in the future? There is no problem getting this tuned and then running open loop. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. May 19, 2021. On my system, I machined in the O2 sensor right between the snail and the manifold of a . Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. 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). It will not fit on round or oval risers without a suitable flat area. Part# 554-155. No prime, but a second later it's ready to crank 'normally'. 2 Reviews. So please, If you have problems registering or can't log into your account, please. A replacement clamp on would be an easy change out. It appears that its a tuning issue. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. It may not display this or other websites correctly. Everyone raving about customer service is telling the truth! The in tank pump is quieter, will normally run cooler and should last longer. Greatest struggle is the shift interrupt. 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. 10 min read. The spark must be manually tuned. My hand is holding the connector to the sensor. Add to Cart . The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Initial Calibration in Basic Configuration. Then if that doesn't work call the tech line they are great! It's fast, simple and absolutely free. They have been working out well for a few years now. Specs. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. I do agree if he can get it tuned prior to fouling he can lock that tune and run in open loop. EFI EFI kit electronic fuel injection. This Video Shows Ideal O2 Sensor Placement! Good luck! For a better experience, please enable JavaScript in your browser before proceeding. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. Emissions. $43 per night (Latest starting price for this hotel). Dec 28, 2016. Why? John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. Also some tips on preventing O2 sensor damage An adapter harness is available to connect this distributor directly to the Sniper EFI throttle body. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. 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. Holley 554-100 NTK Wideband Oxygen Sensor. Wideband Oxygen Sensor Extension Cable. In Stock. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. Seems to LEARN much faster than the Fitech did. It only runs rich on start up for a second due to the prime, after start it runs great. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Bolt on 4150 Flange Carburetor Replacement. Holley EFI requires several pressure inputs in order to run an engine. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). I'm 3" down from the bottom of the flange to center of bung. Holley Sniper EFI Wideband Oxygen Sensor. Holley part number 554-155. Does an yone have a pic of the O2 sensor in their exhaust? Have you visually verified that all your injectors are spraying? Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? Yellow Init In First shown for an instant when the system is powered on. Make sure to put anti seize on the threads. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. The World's largest I am just now ready to do the tuning this weekend. It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. 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. Capability Range: Advanced The ones in the Bosch box come without warranty. 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. The Sniper EFI throttle-body drops in place of your . 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after Tech Resources. Master ASE tech since 91. Throttle body mounted ECU - no extra boxes to mount. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. Ran about 5 seconds and died. Maybe going all the way to the front is the way to go? Thanks for the feedback on this adapter, Donald. Sniper EFI Quadrajet Marine. This doesn't mean it can't be done. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. I want to register an account for free right now! From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. 74 FJ40 confined to the swamp. 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. . Homemade body parts replace the originals as they rot away but it's a 40 on the inside. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. Got a picture? EFI Systems based on Holley's world-class Dominator and HP ECU's. 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. EFI System Pro also has a good bit of tech info on their website. a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . 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. So much it could be. Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . Much of the system is encased right inside the throttle bodyand that includes the ECU. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. Full product line and accessories at excellent pricing. To simplify . Sniper EFI Releases new Stealth 4150 Models! On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. 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. Sort. Only show this user. The fuel module is self contained with water jacket cooling and contains the low and high pressure pumps. I'm guessing by snail, that's another name for the riser? Holley recommends a 3/8" fuel supply line. This really applies to any O2 sensor regardless of EFI system. 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. My question is concerning what happens a year later, when I have a top-end swap . They are about 4 inches long, in-line between the log and manifold. Oxygen Sensor, Replacement, Sniper EFI, Terminator X, 3-wire, Thread-in, Each See More Specifications | Check the Fit. 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. Followed all the instructions to the letter. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. Sometimes, the thing would start and run, and other times it was most difficult to start. 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. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace.

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