Distributor and ignition box? Wiring the Holley Sniper EFI system is equally easy. Holley EFI Oxygen Sensor. It should be pretty straight forward what each of these values do. Your talking flames at that point, and it will definitely have an effect on the reading. Staff Writer. Sadly, no. The truck started fine after install, and ran down the road ok. Pricing was reasonable, shipping was prompt and Chris helped me with a wiring question during my install. The spark must be manually tuned. Marc, you don't mention which system you installed but the Holley systems are fully configurable. Great Article. Does an yone have a pic of the O2 sensor in their exhaust? I hope that the next F/2F header is more O2 sensor friendly. Pink switched power wire, this needs to be connected to a point that is 12V in run and while cranking. Holley part number 554-155. For now I have a genuine bosch O2 and Standard Automotive TPS installed. 100% identical. A replacement clamp on would be an easy change out. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. looking at doing the same. On my system, I machined in the O2 sensor right between the snail and the manifold of a . May God's grace bless you in the Lord Jesus Christ. To close this one out, below is a photo of where I installed the O2 bung. 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. Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . I have a boat with twin 3.7 Mercruisers. 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. Greatest struggle is the shift interrupt. No worse than taking the reading in the intake manifold cross over. 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. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. I have also picked up another .5 gallons per hr to about 9.25 gph. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. is donald smith still alive; julie grant court tv cheerleader The very front would be the safest place. 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. Followed all the instructions to the letter. It will flood itself out and won't start back, just crank and crank. Sort. http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. QFI-500 Oxygen Sensor. With a bad TPS you will have to manually prime to try and get it . There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. functioning controller during engine operation. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. The wiring was a bit of a mess. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Much of the system is encased right inside the throttle bodyand that includes the ECU. 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? The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. 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. But MAP sensors are very easy to physically implement and are inexpensive. Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! Part# 534-199. As far as warranty goes, Holley products are covered by a 90-day warranty against defect in material or workmanship. replaced my original terminator x sensor that was mounted in an exhaust that took on some water and killed the original sensor. 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. It appears that its a tuning issue. See Details. Thinking about this I think this will work very fine! 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. Warranty Information. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. 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. This doesn't apply to race boats. 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. 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. Who knows. $102.95. This step is only for those installing their Super Sniper EFI on top of a draw-through or Roots-style blower. 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. 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. 2023 Holley Performance Products, Inc. All Rights Reserved. Part# 550-511. You can selectively provide your consent below to allow such third party embeds. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. O2 sensor placement is critical for getting your engine to read the oxygen in the exhaust correctly and can directly impact the performance of your new EFI installation. Supports up to 650hp with Four 100 Lb/Hr Injectors! New 100 owner, long time cruiserhead - https://forum.ih8mud.com/threads/new-100-owner-long-time-cruiserhead.1300238/. Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! EFI EFI kit electronic fuel injection. Holley Sniper EFI Oxygen Sensors 554-155 Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. Tech Resources. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. I have a 74 bronco, 302, mild cam. I bought a new holley sniper , dual sync dist., coil, and holley in tank fuel pump, When engine got hot it would go crazy. The engine floods and it is embarrassing when leaving a lock. I will keep the in-line pump for a spare. JavaScript is disabled. 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 . 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. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Sort. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. . I know from some of the other posts, there have been WBO2 sensor issues. Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. Looking for some advice pertaining to Holley Sniper and Tire Size upgrades. Otherwise I have to check for a place in my gasoline tank to put the lines in. All sensors are tested to ensure they accurately report critical engine data to the . I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. What Is Pinion Offset, And How Does That Affect You? away. EFI Systems based on Holley's world-class Dominator and HP ECU's. Newer ECMs have all the options to configure these functions. so simple check first, whats the fuel pressure? After a few tries by jumping the starter solenoid I then realized the ignition key was in the off position. It works fine. Innovate Motorsports HBX-1 Bung Extender. From there, our highly trained factory refurbish technicians flow the original fuel injectors. Sniper EFI 2300 Marine. Other? The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. $132.95. The fuel pump question is the tough one. The original Holley Sniper instructions are available on the Holley website if you have misplaced them. Free ground shipping regardless of order size! Use a return fuel line. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. . Add To Cart. 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. non biased Shelby Cobra related site! If this is a first time effort, find a tuner in your area with marine experience. 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). If this could be disabled it would be much better. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after Add to Cart . Replaced and gapped to .45 all spark plugs. 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. Also some tips on preventing O2 sensor damage YES! Stay up to date with the latest releases, events, promotions and more. One workaround was to leave it in gear and slow to a stop and push the clutch as RPMs drop . 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. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. The engines are rated at 170 hp each. The Sniper will do that. Part# 554-155. holley efi. 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. Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. I'm 3" down from the bottom of the flange to center of bung. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. As always, your results may vary and batteries not included. Not always the case with a boat. I installed it without O2 sensor, adjust on the fly. I think I could run more boost but it's a real hand full right now. The plan is to 'learn' a fuel\Timing curve with a closed loop. If you find that please let us know. Sniper EFI Releases new Stealth 4150 Models! I've dunked mine lots of times. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. The new Exhaust manifolds will have wideband O2 bungs for tuning. 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. Yes, this is an old thread, but it's an old unit. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Thanks again for writing! Price Point: $$$. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. Add To Cart. That sounds like one solution. Categories. Then operate open loop with a fuel map\Timing curve.I am interested in the capabilities of the Sniper product (4 injector) in a Marine application.. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. This really applies to any O2 sensor regardless of EFI system. 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). This is made by Innovate, the guy that runs the Holley EFI forum HIGHLY recomends AND uses them himself, I use them, my o2 on my wideband Innovate, kept going bad, a 4.2 Bosch o2, put this on both my Holley HP NTK sensor & the wide band, been 2 years now & lots of driving, all good, Heat-Sink Bung Extender (HBX-1) - P/N: 37290 The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. I'm guessing by snail, that's another name for the riser? 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. Spray a rag down pretty good with brake cleaner. 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. You are using an out of date browser. I want to register an account for free right now! Has anyone run an O2 sensor in an EFI on a marine engine? Thanks for that, Danny. You should then have at least 18-24" of pipe after the sensor. A third option would be to run your EFI system without an O2 sensor at all. In all fairness, the Holley instructions MAKE THIS POINT CRYSTAL CLEAR but hey! You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. ), https://www.ebay.com/sch/i.html?_froensor&_sacat=0, https://www.amazon.com/Bosch-Automot1296929&sr=8-3, https://www.efisystempro.com/wbo2-seer-tbi-554-155, https://forums.holley.com/showthread2927#post82927. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. Systems that were already designed for marine efi. I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. We also use content and scripts from third parties that may use tracking technologies. . 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. Then they had it repaired and back to me in 5 business days. Holley's self learning system is a blessing and a curse. They are the only ones got me a holley usb to can cable fast. 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, If I am reading your post correctly you are using two separate o2 sensors when using headers ? Has been since the 80's. 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. The clamp-on that came with mine wasnt a good fit on my 2" pipe. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. Anything else is going to be a frustrating recipe for for failure. This Video Shows Ideal O2 Sensor Placement! 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 following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. Increasing efficiency is always a good idea. 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. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. 3. HP comes from torque and rpm and rpm breaks things and increases wear. I am a competent mechanic and I have checked all the usual suspect items. 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. We may earn a small commission from affiliate links and paid advertisements. I am a competent mechanic and I have checked all the usual suspect items. Replacement Sniper and Terminator X O2 Sensor, This part is legal for sale or use on Racing Use Only Vehicles. quick fuel. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. 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. If you have long tube headers, mount the sensor approximately 6-10" after the collector.
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