On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. Everything is included to completely plumb your fuel system including; 20 feet of 3/8" EFI Hose, in-line fuel pump, post and pre fuel filters, return bulkhead, and all of the necessary fittings and hardware. Prime cannot be adjusted on this old unit. 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. Holley EFI has the solutions you need to get your project up and running better than ever! I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. I do agree if he can get it tuned prior to fouling he can lock that tune and run in open loop. Bolt on 4150 Flange Carburetor Replacement. The truck started fine after install, and ran down the road ok. Thanks for the compliment--we look forward to your feedback! See Details. Sort. Mike. That sounds like one solution. 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. . Holley Sniper EFI Oxygen Sensors 554-155 JavaScript is disabled. I thought about adding some sort of extra protection but never did. Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. 3. The Sniper EFI throttle-body drops in place of your . . In order for it to work as designed the O2 sensor has to be installed in a dry exhaust system and needs to be placed 1-10in from the collector in the headers. away. Wiring the Holley Sniper EFI system is equally easy. non biased Shelby Cobra related site! I have not gone back in to try to fine tune them. This was for MPFI. Stay up to date with the latest releases, events, promotions and more. 02/25/2020. If he wants to run in closed loop and have the system adapting to conditions at all times, the minute he fouls he is dead in the water. Free ground shipping regardless of order size! I will be starting mine up this month, I hope it goes well, good luck to you. - You are currently viewing the forums as a GUEST. Sniper EFI Installation Guide. Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . Capability Range: Professional He also explains how to properly install them. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . 29. The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. Phil is right. In the case of the car, you can generally get out and walk (run?) I really dont want any issues on the whitewater lol Doesn't look like it will have an O2 sensor. He knows his stuff, gets back quickly to you, etc. Holley EFI requires several pressure inputs in order to run an engine. 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. Shop Oxygen Sensors at Summit Racing. Howell indicates that this adapter was designed for the Chevy type Mercruiser manifold but that it should work on any similar marine wet manifold. I received my replacement TPS and O2 sensor. Holley Sniper O2 sensor replacement. 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). In order to do this, it heavily relies on proper O2 sensor placement. Purely coincidence about the '2300' number. I found this in the instruction manual for the older commander 950 system. All sensors are tested to ensure they accurately report critical engine data to the . Jan 20, 2019. Ideally I'd want the power plant running as efficiently as possible, but I'd sure like the benefit of EFI over carb. 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. You really want a bigger engine. 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. Innovate Motorsports HBX-1 Bung Extender. So much it could be. MAP Sensors. Otherwise I have to check for a place in my gasoline tank to put the lines in. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. He had one there that was run on a dyno then the fuel map was set and shipped back. 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. It only runs rich on start up for a second due to the prime, after start it runs great. Fortunately, it turns out there are some options. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. New 100 owner, long time cruiserhead - https://forum.ih8mud.com/threads/new-100-owner-long-time-cruiserhead.1300238/. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. If you call, they usually let you put in your name and they get back to you. JavaScript is disabled. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Precisely Adam. Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. I'm about to embark on the same type of project. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. Part# 50-5009QFT. QFI-500 Oxygen Sensor. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. 2014 FJ Cruiser - White - 4X4 - Loaded - . I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Bolt-on carburetor style EFI for your classic car or truck. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. In the event you decided earlier that you are going with the Sniper EFI System you will not have the requisite tuning capability by simply using the included handheld tuner. As far as spark control, the Sniper will let you tune those 4 points, nothing else will. Q1. . Advanced throttle body injection systems capable of transmission control and more. As far as packaging goes, one comes in a Bosch box, the other in a Holley package. Add To Cart. Part # HM206. Any exhaust down at engine level or lower will definitely get at LEAST some steam. I am considering the Daytona Sensors Ignition module. Distributor and ignition box? I'll let you know how it works out. Advertising . 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. From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. This Video Shows Ideal O2 Sensor Placement! I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. 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. 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. 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. Full time feedback from the sensor is what the computer uses to refine the fuel table. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. Oxygen sensor: It's perfectly OK to share narrow band oxygen sensors with the stock ECU. blue doberman puppies. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! I have installed the Holley hp efi MPFI on my twin inboard mercruiser 350ci 270 hp. turn on the ignition.but do not start the engine. Capability Range: Advanced You have to one big hole in the riser, then you reach the cooling water, and one little hole in the next part of metal: now you reach the exhaust gasses. Part# 554-155. I did--- Save your money and piece a fuel it together. Marc, you don't mention which system you installed but the Holley systems are fully configurable. Thanks guys. I'm 3" down from the bottom of the flange to center of bung. so mine has been pretty good but 1 out 20 starts you can hear the fuel pump run longer then normal..when it does that it will light off then diebut if i put my foot to the floor it will start..still working on that 1..timing i am running 12 cranking.20 idle.40 cruze.35 wotstill playing with all of this..Mine is also a sniper stealth. Having the same problem with my sniper as well, intermittent hot (and cold) start issues. I will get a new 02 sensor before I swap back to the orange box. RPM going up and down , miss firing and backfiring. 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. 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. 3. 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. What is your fuel pressure at the carb during crank? Bosch 17025 Oxygen Sensor #1 Best Seller . Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. Only show this user. AFR was 19 area. But it is going to be a little tricky. Bolt-on carburetor style EFI for your classic car or truck. What Is Pinion Offset, And How Does That Affect You? My tune is coincidentally set at 11.5 desired afr, with the failed side as the leanest bank, but the ecu added 15% fuel anyways. I installed it without O2 sensor, adjust on the fly. The ones in the Bosch box come without warranty. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. May 1, 2018 They want you to angle it to keep it from fouling. 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. Bolt-on carburetor style EFI for your classic car or truck. The reason I say this is that nowhere in this discussion is the fact that none of these systems are are handling the timing on the fly. 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. The sniper fit perfectly on the intake. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. The O2 sensor burned out immediately. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. $5 Off Your $100 Mobile App Purchase . 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. All of the wiring begins at the throttle body and connects outward from there. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. On a side note: Im getting 4200 rpms at 5000 elevation with stock heads. I just installed a Sniper on a 67 GTO and it was pretty straightforward, the end result was a much better starting/smother running car, than can adapt to elevation changes better, But we also installed the Holley Dual sync distributor for a complete system that adjusts timing as well. I hope that the next F/2F header is more O2 sensor friendly. I'm guessing by snail, that's another name for the riser? Add to Cart . It will not fit on round or oval risers without a suitable flat area. HP comes from torque and rpm and rpm breaks things and increases wear. http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. 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. What motor is this on? The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. The throttle body has a built in fuel pressure regulator set at 58.5 psi. Oxygen Sensor, Replacement, Sniper EFI, Terminator X, 3-wire, Thread-in, Each See More Specifications | Check the Fit. Specs. Find a lower price anywhere and we'll beat it by 5%! The truck started fine after install, and ran down the road ok. After some time, the truck will not start after it comes to operating temperature. Still needs a EFI pump and return line. 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. 4. Apr 13, 2017. with the extension. You can selectively provide your consent below to allow such third party embeds. Part# 534-199. Is this a viable upgrade for my boat? I have not yet got it figured out. . Sniper EFI 4bbl Marine. A forum community dedicated to performance boat owners and enthusiasts. #3. 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. 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. If this could be disabled it would be much better. If the indicator reads "LOW Err" double check the connection to the CTS. You must log in or register to reply here. My hand is holding the connector to the sensor. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. 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. The original Holley Sniper instructions are available on the Holley website if you have misplaced them. Full product line and accessories at excellent pricing. For complete information about the cookies we use, data we collect and how we process them, please check our, actual instructions in flowcharting are represented in, Why Is Dave Blankenship Not On Oak Island Season 8, rhode island groundwater classification map. Homemade body parts replace the originals as they rot away but it's a 40 on the inside. It works great where its at. Followed all the instructions to the letter. This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues. Sort. Finally, do you also recognize that the self-tuning feature of the Sniper EFI may not result in an acceptable configuration for your boat and, as such, may require you to seek professional tuning? Holley recommends a 3/8" fuel supply line. Categories. I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. If you are not running the latest software stop guessing and go download it. When either of these operating temperature ranges is exceeded, the sensor can no longer be . Found out that it was due to rfi/emi. Still trying to find more info on electronic conversion, only found Pertronix replacement for points so far.. What TBI, fuel pump, sensors and ECM computer are you using? O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. Supports up to 650hp with Four 100 Lb/Hr Injectors! The latest is the new Holley Sniper EFI touted as a true bolt-on self-learning carb replacement. The Sniper will do that. Hooker BlackHeart Oxygen Sensor O2 Bung 2.25" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 2.5" Clamp-On Style, Hooker BlackHeart Oxygen Sensor O2 Bung 3.0" Clamp-On Style, Holley Oxygen Sensor O2 Bung Weld-In Style. 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. O2 sensors are water proof. Each engine has the Holley marine 2 barrel carburetor. But you still risk a little water running back at low Rs. They have been working out well for a few years now. The fuel module is self contained with water jacket cooling and contains the low and high pressure pumps. Staff Writer. 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. Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. : For registered members this ad will NOT show. 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. 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. The new Exhaust manifolds will have wideband O2 bungs for tuning. Part Number: 510-554-155. 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. My bet based on longer pump run, to make pressure, you have a leaking injector. But you've found the right one for your Holley Sniper EFI System OR your Terminator X EFI System. - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. You have to angle it to help the throttle cable get around the booster. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? The test run was great, they have never run so well even when they were new with carbs. Master ASE tech since 91. I don't have enough experience with marine applications to know exactly what it will take to solve this. Replaced and gapped to .45 all spark plugs. Plug into the coolant temperature sensor. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. 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.) I had the pink ecu signal wire connected to a bullet connector on the passenger side . . The first option is to just buy the injector body and the controller with the wiring harness and sensors. I have a 74 bronco, 302, mild cam. :-), I started using OMC and Volvo Penta pumps for my conversion. Joe, where did you end up installing the o2 sensor on your setup? The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! As far as a sensor goes, absolutely nothing. Sniper EFI Releases new Stealth 4150 Models! Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. For the most part, the small harness is plug-and-play. There can be leftover debris from manufacturing that have been washed down and are now clogging one. Other countries likely have simmilar approval processes for marine engines. . Bolt-on carburetor style EFI for your classic car or truck. 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. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. Is this a good upgrade? Use a return fuel line. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. FWIW, I called Holley to confirm the part number and they say the Bosch part number if 17212 (also available on Amazon for $64.78). *Possible delays due to Covid-19 click for more information. Aug 17, 2013. 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. Maybe going all the way to the front is the way to go? Great Article. 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. Description. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. Capability Range: Moderate Followed all the instructions to the letter. Anti-Seize pre-applied to sensor threads. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. Who knows. functioning controller during engine operation. 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. Has anyone run an O2 sensor in an EFI on a marine engine? Search for O2 Hotel Taipei Main Station discounts in Taipei City with KAYAK. Thinking about this I think this will work very fine! I recently installed the sniper setup on my stock 71 duster 340 4 speed. I was thinking aluminum heads would run it up closer to 5,000 rpm. Will I be able to control my ignition timing with the Sniper? Good luck! My boat is still in winter storage. Can anyone share their experiences with this type of setup? Capability Range: Moderate Pay close attention to the instructions on O2 sensor placement. Installed the sniper/MSD combo on my mildly built 460 KEM. Sniper EFI 4500 Marine. I do believe that the Holley EFI ECU's have the capability to be programmed to work in this application, but have not yet found anyone who has tackled this task and been fully successful.If you (or anyone else) does make some progress on this, please reply here and let us know what works. For a better experience, please enable JavaScript in your browser before proceeding. Be sure to disable autotune and remove the O2 sensor before it dies. It has about 18 hrs to date and is working great. Welcome to ClassicBroncos! The Sniper EFI throttle-body drops in place of your . I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. Staff Writer. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. This doesn't apply to race boats. Q3. 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. Mine is right where Steamers is, and works well with my AFI TBI. I have also picked up another .5 gallons per hr to about 9.25 gph. #1. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. 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, 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. #1. 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. $43 per night (Latest starting price for this hotel). Can more detail be provided? 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 recommend popping for the Master . Next, the new unit was installed onto the manifold. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Now the lower cost Holley Sniper advertised for March 31 2016. . Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. I am happy with Holleys no hassle replacement of the parts. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. The engine floods and it is embarrassing when leaving a lock. And it is timing that is equally critical to best performance and fuel economy. Have engine apart and head checked and cleaned at machine shop. Do you recommend in-tank or external fuel pump? Adam. -- I particularly like the Daytona Sensors Approach to the Ignition Curve.- Are you pursuing Coast Guard Certification for the Sniper_EFi? It could be an instant fix. Holley Sniper EFI Wideband Oxygen Sensor. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. EFI System Pro had everything I needed for my EFI upgrade. Add to Cart . 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. PRO's: Wideband O2 sensor harness is longer, allowing easier connection and routing. Super helpful and knowledgeable. 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. They have mods that help. Part # 554-155. Do you offer a USCG fuel pump kit? For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications.

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