This Video Shows Ideal O2 Sensor Placement! A forum community dedicated to performance boat owners and enthusiasts. Go to the web site and it will explain the installation it is very simple and works well.As for the rpm you are comparing to completely different animals (pumps). What motor is this on? Yes, this is an old thread, but it's an old unit. I have searched thru the forum as much as I can, with not much luck. Followed all the instructions to the letter. Install the throttle linkage to the Sniper EFI throttle body. Welding in an O2 Sensor Bung for a Holley Sniper EFI System Will I be able to run both systems off of one fuel pump? This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Car runs perfect . I will get a new 02 sensor before I swap back to the orange box. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. I will keep the in-line pump for a spare. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. Holley EFI requires several pressure inputs in order to run an engine. suspect bad o2 sensor with Holley efi | Yellow Bullet Forums Thanks again for writing! Please consult the Holley Sniper full manual and use this guide for supplemental clarification. If you are not running the latest software stop guessing and go download it. I will be calling around to see if I can find someone to help that has experience. 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. Product Q&A . 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? It's fast, simple and absolutely free. My boat is still in winter storage. I had questions on the suggested "Marine O2 Sensor Adapter" from Howell EFI (https://howellefi.com/product/adaptor-o2-sensor-for-marine-use/), but when I look to the pictures, I understand how it will work. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. The ones in the Bosch box come without warranty. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? Waiting for spring to put back together. 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. 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. Boats don't cruise at 60mph up and down hills. Any word on this? Holley EFI Sniper O2 Sensor Install - YouTube Stay up to date with the latest releases, events, promotions and more. I recommend popping for the Master . Full product line and accessories at excellent pricing. Capability Range: Professional 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. Initial Calibration in Basic Configuration. May God's grace bless you in the Lord Jesus Christ. #3. 2. Systems that were already designed for marine efi. 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. By Joshua C on August 10, 2021 | Verified Owner, Worked right out of the box. RPM going up and down , miss firing and backfiring. Q2. The spark must be manually tuned. I'm guessing by snail, that's another name for the riser? Installing MegaSquirt in Parallel With the Stock ECU 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. I have not gone back in to try to fine tune them. Whether you're engine swapping your classic car or need to manage 4000 horsepower in your twin-turbocharged drag radial race car, Holley EFI has the solutions you need to get your project up and running better than ever! After a few tries by jumping the starter solenoid I then realized the ignition key was in the off position. Without the engine running, AFR will read 35.6 The fuel pump will run off a relay in the sniper harness (blue wire) pink wire gets switch/run power to the relay. Holley Sniper first start No o2 sensor - YouTube Thanks guys. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. Welcome to ClassicBroncos! Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Conditions when closed loop o2 should be turned off. 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 . 10 min read Video. For the most part, the small harness is plug-and-play. 10 min read. Fine tuned the timing to 12-15 degrees. Register now for free!) WBO2 Sensor 17025 Bosch 554-155 Holley - EFISystemPro.com The Ford 2300 engine uses a Holley carburetor, but it is in fact a licensed copy of a 32/36 Weber. They have been working out well for a few years now. a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . Capability Range: Advanced If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. 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. This page was generated at 08:35 AM. When problem-solving this type of issue, consider when and how you could use a work-around. turn on the ignition.but do not start the engine. I do agree if he can get it tuned prior to fouling he can lock that tune and run in open loop. 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. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after 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. . Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. O2 sensors are water proof. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. One example of a direction could be an adjustable timed delay-on injector-power relay in the injector power feed wire, delaying 1-second after key-on or whatever is necessary to bypass the prime shot time, only. I just installed a Sniper on a 67 GTO and it was pretty straightforward, the end result was a much better starting/smother running car, than can adapt to elevation changes better, But we also installed the Holley Dual sync distributor for a complete system that adjusts timing as well. I upgraded from terminator x Maxx to dominator.. bought a 2nd o2 sensor kit with Bosch sensor and used an off the shelf Bosch I had been using with terminator. EFI EFI kit electronic fuel injection. When it did keep running, the headers all started to smoke. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. Hi all, i'm contemplating doing a sniper quadrajet swap onto my volvo penta 5.7 GL 2bbl holley motor in my 1997 cobalt 200 with the DP-S outdrive. Then if you are do you just wire the o2 sensors in parallel or do these EFI kits have inputs for more than one sensor. Doesn't look like it will have an O2 sensor. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. Price Point: $$$. I'm 3" down from the bottom of the flange to center of bung. It flows 850 cfm and can support up to 650 horsepower. Capability Range: Professional No, use only one 02 sensor, mounted close to exhaust manifold, or high up on a Header collector, not into a single Header pipe that merely gets a exhaust pulsation. It only runs rich on start up for a second due to the prime, after start it runs great. I have a 74 bronco, 302, mild cam. Holley EFI 554-155 Holley EFI Oxygen Sensor 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. Wondering how you are progressing with this? Holley EFI 534-49 Holley Oxygen Sensor O2 Bung Weld-In Style EFI Systems based on Holley's world-class Dominator and HP ECU's. 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.). According to AEM Electronics, a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: Additionally, if an Sniper or Terminator X EFI System has repeated O2 sensor failures and none of the above-listed suggestions seem likely then contact Holley and arrange to have the unit tested. This was for MPFI. Distributor and ignition box? - You are currently viewing the forums as a GUEST. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. This really applies to any O2 sensor regardless of EFI system. Yellow Init In First shown for an instant when the system is powered on. 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. Can more detail be provided? I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. Free ground shipping regardless of order size! The target A/F value based on load or MAF cfm, and engine speed. Do you recommend in-tank or external fuel pump? It has about 18 hrs to date and is working great. Capability Range: Advanced Hopefully this one lasts longer than the original. 3. Q3. This doesn't apply to race boats. I have a 74 bronco, 302, mild cam. 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. Holley 554-100 NTK Wideband Oxygen Sensor. About your only location is in that short area from the log to the port face. An adapter harness is available to connect this distributor directly to the Sniper EFI throttle body. Is the O2 sensor on the dyno must have a very long pipe extending past where it is positioned or backwash from the room air will violate the readings as well as any header leaks. I want to remove the old fuel injected Mercruiser factory EFI on both engines because they have begun to be troublesome. From there, our highly trained factory refurbish technicians flow the original fuel injectors. Have to replace head gasket. Adam. running holley sniper without o2 sensorplymouth township mi police scanner. I just discovered that was the case with my Fitech. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Capability Range: Moderate 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. the engine not running. Who knows. Now the lower cost Holley Sniper advertised for March 31 2016. So much it could be. Jun 7, 2021. Part# 554-155. holley efi. He had one there that was run on a dyno then the fuel map was set and shipped back. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. Seemed to be getting too much fuel on hot starts and flooding out, could get it to go by putting it to the floor while cranking as Action mentioned. PS, Once someone has a good 270/350 tune, everyone can use it. 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. Not always the case with a boat. I have tried several different settings to get it going, no luck. Has been since the 80's. I installed a holley sniper kit. Look at the bottom.. 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 truck started fine after install, and ran down the road ok. Sadly, no. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. 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. This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues. I also capped off the regulated return line with a hose, clamps, and chamfering bit. Categories. The included fuel system places a 340LPH fuel pump in the tank, which can easily be . 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. 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. Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! Here is one on start up tuning. Full time feedback from the sensor is what the computer uses to refine the fuel table. Maybe my manifolds leaked the inside between the snail and the log?? Part# 550-511. It will crank and run great for 2-15 seconds then die. On my system, I machined in the O2 sensor right between the snail and the manifold of a . (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). The in tank pump is quieter, will normally run cooler and should last longer. This free oxygen is picked up by the O 2 sensor and determined to be indicative of a lean AFR condition when, in reality, the engine could potentially be running slightly rich. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. The plan is to 'learn' a fuel\Timing curve with a closed loop. 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. running holley sniper without o2 sensor - plural.works Explained: Holley EFI Sensors and What They Do Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. JavaScript is disabled. Yellow Cold! 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. 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. Find a lower price anywhere and we'll beat it by 5%! : For registered members this ad will NOT show. George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. 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. Late to the party but here's where mine are installed. We may earn a small commission from affiliate links and paid advertisements. Register now for free! I'm about to embark on the same type of project. Get fast, Free Standard Shipping on orders over Summit Racing Equipment from $99 -- no shipping, handling, or rural fees! Warranty Information. Bolt-on carburetor style EFI for your classic car or truck. 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 started using OMC and Volvo Penta pumps for my conversion. If you're thinking that you've read everything above and are ready to toss the carb on your marine engine then take this handy quiz to make sure! well I have installed the Sniper on my 460 KEM (Ford) marine motor. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. The truck started fine after install, and ran down the road ok. Categories. There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. Seems to have more low end tq and is much smoother power through out the rpm range. For a better experience, please enable JavaScript in your browser before proceeding. Is Holley working on a complete marine package or planning to in the future? Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. #HM206 - ADAPTOR, O2 SENSOR for Marine use - Howell EFI Conversion Staff Writer. 2023 Holley Performance Products, Inc. All Rights Reserved. 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 bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. The throttle body has a built in fuel pressure regulator set at 58.5 psi. replaced my original terminator x sensor that was mounted in an exhaust that took on some water and killed the original sensor. AFR was 19 area. Stock manifolds? 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. 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. I had the pink ecu signal wire connected to a bullet connector on the passenger side . 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. Wideband Oxygen Sensor Extension Cable. O2 Sensor in a boat exhaust | Performance Boats Forum Not sure how well the sensor likes being that close to the port. Holley Sniper - Oxygen Sensor Location | IH8MUD Forum While the Sniper has an absolutely outstanding internal ECU, the current model does not offer any laptop programmability. Installing Holley's Sniper EFI Quadrajet System on a 1970 Corvette As far as a sensor goes, absolutely nothing. But you still risk a little water running back at low Rs. 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? Is this a viable upgrade for my boat? 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. 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. We also use content and scripts from third parties that may use tracking technologies. . You have to angle it to help the throttle cable get around the booster. So there is at least some probability of success. 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. QFI-500 Oxygen Sensor. I installed a holley sniper kit. 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. Marc, you don't mention which system you installed but the Holley systems are fully configurable. 5. Part# 554-155. Capability Range: Advanced I was thinking aluminum heads would run it up closer to 5,000 rpm. Aug 17, 2013. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. 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? Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . 534-199. O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. Affiliate. I found this in the instruction manual for the older commander 950 system. That's great--we look forward to your results! Found out that it was due to rfi/emi. Holley EFI has the solutions you need to get your project up and running better than ever! These types of adjustable on-delay timer relays are on sites like Amazon for less than $10 up to $15. pull the sensor out of the exhaust. In Stock. From there, the idea is that it will self-tune to the requirements of the engine. 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. http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. Sent unit back to Holley. There was a 1.5 point difference in afr between banks. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. Engine Startup Tuning for Sniper and Terminator X Stealth Owners (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Plug-And-Play Compatible with Holley Sniper EFI System, Only for applications that use a Bosch LSU 4.9 0 258 017 025 (17025) Wideband O2 Sensor, Particulates, carbon (e.g.
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