. Holley sniper help!!!! | ClassicBroncos.com Forum 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. Have to replace head gasket. Only show this user. For now I have a genuine bosch O2 and Standard Automotive TPS installed. Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! Boats don't cruise at 60mph up and down hills. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. Fuel economy went from 12.5 to 13.5 gph to 10 gph. My bet based on longer pump run, to make pressure, you have a leaking injector. The included fuel system places a 340LPH fuel pump in the tank, which can easily be . - You are currently viewing the forums as a GUEST. Capability Range: Advanced Holley EFI has the solutions you need to get your project up and running better than ever! What exhausts are the best? Warranty Information. On my system, I machined in the O2 sensor right between the snail and the manifold of a . Specs. What Is Pinion Offset, And How Does That Affect You? It's a compact HP pump and cooler assembly. I know from some of the other posts, there have been WBO2 sensor issues. Price Point: $$$. I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. *Possible delays due to Covid-19 click for more information. Holley Sniper O2 sensor replacement - Club Cobra You really want a bigger engine. Its the Holley Pro Jection TBI mentioned by the above poster. 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. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. I only have a stick welder and didn't trust myself on the thin pipe so I brazed it in. Staff Writer. Can more detail be provided? Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. HP comes from torque and rpm and rpm breaks things and increases wear. For this you need a system that can be fully programmed to the extent of the Holley ECU's capability. Holley Sniper - Oxygen Sensor Location Thread starter GA Architect; . 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. My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. . Each engine has the Holley marine 2 barrel carburetor. 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. Do you also recognize that the O2 sensor that is required for closed-loop operation will not survive in the "wet" manifold used by most marine engines, and that to install a device to protect the O2 sensor from this moisture may require the removal, machining, and replacement of the exhaust manifold? I 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. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to 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. I'm using the NTK sensor. It has about 18 hrs to date and is working great. 5. Add to Cart . Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! Note the temperature sensor mounted on the back of the driver side head in the above photo. There is no problem getting this tuned and then running open loop. Also some tips on preventing O2 sensor damage Your talking flames at that point, and it will definitely have an effect on the reading. 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. turn on the ignition.but do not start the engine. 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. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. Innovate Motorsports HBX-1 Bung Extender. 92 YJ 4.0, AX-15 5spd, np231, dana 30 front, dana 35 rear. 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. Some of the landlubbers who are reading this may not realize that many inboard engines utilize what is called a wet exhaust, pushing the water from the engine block into the exhaust and then back into the lake/river/sea on which they float. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. Holley sniper issues - 1969-70 Technical Forum - 69stang.com and Thanks for that, Danny. Top 10 Sniper EFI Installation Tips from Holley's Tom Kise 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. Or maybe I could just use a piece of spare/junk exhaust tubing, and bolt it to the manifolds and add a weldless O2 bung to it. temporarily running without WBO2 sensor? - Holley Come join the discussion about offshore racing, performance, modifications, builds, classifieds, troubleshooting, maintenance, and more! The Sniper will do that. Initially I was looking for the upgrade to a 4V holley 4175 carb, but this option has peaked my interest. So there is at least some probability of success. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). 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. 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! Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. Oxygen Sensor, Replacement, Sniper EFI, Terminator X, 3-wire, Thread-in, Each See More Specifications | Check the Fit. I've dunked mine lots of times. That sounds like one solution. That's great--we look forward to your results! I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. Visit their website for more details. 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. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . I would send an Email to Chris at EFIsystempro. Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. EFI Systems based on Holley's world-class Dominator and HP ECU's. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. Part# 50-5009QFT. 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. Can anyone share their experiences with this type of setup? 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. Have engine apart and head checked and cleaned at machine shop. When either of these operating temperature ranges is exceeded, the sensor can no longer be . Still needs a EFI pump and return line. 2023 Holley Performance Products, Inc. All Rights Reserved. Price Point: $$$. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. so simple check first, whats the fuel pressure? I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? I installed a holley sniper kit. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. O2 sensors are water proof. It looks like another season has come and passed by without the answer you wanted on this.I am impressed that you made the leap into marine fuel injection but you have experienced the same problem that everyone else who has tried this has faced. i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. Otherwise I have to check for a place in my gasoline tank to put the lines in. The wide band O2 sensor is required for initial running and calibration. Holley EFI requires several pressure inputs in order to run an engine. Holley EFI. Perfectly Taipei - 25 Must-See City Highlights | Taipei Travel $132.95. looking at doing the same. Purely coincidence about the '2300' number. I am happy with Holleys no hassle replacement of the parts. It turns out that this is a common problem with the Sniper EFI install on vehicles with a manual transmission. Just a rumor. Capability Range: Advanced Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: I have searched thru the forum as much as I can, with not much luck. Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. You must log in or register to reply here. The target A/F value based on load or MAF cfm, and engine speed. I have not gone back in to try to fine tune them. The clamp-on that came with mine wasnt a good fit on my 2" pipe. ), 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. On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. Is this a good upgrade? Runs like a champ now. Sep 14, 2021. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. Sniper EFI 4bbl Marine. Hopefully this one lasts longer than the original. Q1. No worse than taking the reading in the intake manifold cross over. Throttle body mounted ECU - no extra boxes to mount. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. While the Sniper has an absolutely outstanding internal ECU, the current model does not offer any laptop programmability. The oxygen sensor should be mounted at a point where it can read a good average of all the cylinders on one bank. 2 Reviews. Now the lower cost Holley Sniper advertised for March 31 2016. test the sensor.. for a basic pass/fail of the sensor. 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. Got a picture? #1. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. Terminator X O2 sensor Off the shelf replacement? However, there's a good chance you will want to add a wideband O2 sensor at some point, in order to give the MegaSquirt more tuning information. 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. Here's the pic of the location with my header. I want to register an account for free right now! That is defacto step one in trouble shooting fuel injection systems. Holley Sniper EFI Wideband Oxygen Sensor. Don't know about HP increase, with the QFT 750 it would turn a 212/4.0 combo to about 3950 to 4000, the Sniper turns it to 4000 to 4100. This was for MPFI. I have about 30 hrs on the unit and it just keeps getting smoother with every hr of run time. This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. Phil is right. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. You can selectively provide your consent below to allow such third party embeds. He had one there that was run on a dyno then the fuel map was set and shipped back. 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. Free ground shipping regardless of order size! CUSTOM ART FOR CUSTOM NEEDS. I really dont want any issues on the whitewater lol You must log in or register to reply here. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. I'll let you know how it works out. From there, our highly trained factory refurbish technicians flow the original fuel injectors. Precisely Adam. Holley EFI Oxygen Sensor. 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. In this case, the prime shot is good for cold, but too much for warm. Was in marine engineering for years. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. 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. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Sensors that are installed in an exhaust must be connected to a properly Spray a rag down pretty good with brake cleaner. Not sure how well the sensor likes being that close to the port. Follow USCG rules about materials and fittings. Any exhaust down at engine level or lower will definitely get at LEAST some steam. 5. The truck started fine after install, and ran down the road ok. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. Most water jacketed header manufacturers (Lightning, CMI, etc) will install 02 bungs in their headers for extra money. Capability Range: Moderate 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. A third option would be to run your EFI system without an O2 sensor at all. 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 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. I bought a new holley sniper , dual sync dist., coil, and holley in tank fuel pump, When engine got hot it would go crazy. Do you recommend in-tank or external fuel pump? Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . I have a 74 bronco, 302, mild cam. 29. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle, By Corey A on June 4, 2021 | Verified Owner. $119.95. Sniper EFI 2300 Marine. By bypassing the built in pressure regulator in the fuel module(allowing full flow and pressure), using 3/8 hard lines to/from the sniper to meet CG rules( no soft lines on the engine block)using the snipers fuel pressure regulator, This is as close as I can come to safe. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Brand: Holley EFI Emission Code: 5: Material: . - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. No matter what I do, it will not start. Why? My spare "Bosch O2 Sensor" came from eBay & was half the price of anywhere else I found. Here is one on start up tuning. Stock manifolds? EFI Swap | Shamrock Boat Owners' Club 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). I just discovered that was the case with my Fitech. Adam. Emissions. quick fuel. Yellow Init In First shown for an instant when the system is powered on. Anyone ever converted a 1987 3.7L 4cyl Mercruiser engine to EFI. Idle and off-idle performance (particularly as the engine goes into gear.) Find a lower price anywhere and we'll beat it by 5%! 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. Holley efi behavior with bad o2 sensor, safety feature 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. 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. 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. 10 min read. RPM going up and down , miss firing and backfiring. JavaScript is disabled. Are you holding your RPMs back with the MSD for some reason? 3. 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. so far so good love the smooth power and easy starts. Part# 554-155. 29. Could show a lean condition when in fact it really isn't. 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.. Are you running the entire system? All sensors are tested to ensure they accurately report critical engine data to the . May 19, 2021. I installed a holley sniper kit. Distributor and ignition box? O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. PDF Holley Sniper Installation Supplement Yes, this is going to be an added expense, however, it will help guarantee your success. Followed all the instructions to the letter. This is great information that can only get you closer to an ideal solution. Sniper EFI Releases new Stealth 4150 Models! Holley's self learning system is a blessing and a curse. 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. As far as a sensor goes, absolutely nothing. 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? 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. 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. I installed a holley sniper kit. When problem-solving this type of issue, consider when and how you could use a work-around. All times are GMT-6. Pay close attention to the instructions on O2 sensor placement. 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, Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing issues. My hand is holding the connector to the sensor. Yes! This fixed the high throttle position sensor reading (TPS) of above 1% that likely caused my idle issues. Add to Cart . pull the sensor out of the exhaust. And who can blame them? The truck started fine after install, and ran down the road ok. 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. How To Properly Place and Install an O2 Sensor - Holley Copyright 2022 Holley Performance Products, Inc. All right reserved. A 90-degree V-6 has three shared crankpins set 120 degrees apart. 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. I wouldn't say "never", but the last time I asked that specific question I was told it wasn't anywhere on the horizon. These types of adjustable on-delay timer relays are on sites like Amazon for less than $10 up to $15. 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 right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. Holley Sniper Marine EFI | Bloodydecks 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. :-), I started using OMC and Volvo Penta pumps for my conversion. 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 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. I want to register an account for free right now! If I am reading your post correctly you are using two separate o2 sensors when using headers ? Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. Conditions when closed loop o2 should be turned off. I'm about to embark on the same type of project. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. Q3. $102.95. 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. Capability Range: Advanced Newer ECMs have all the options to configure these functions. I also capped off the regulated return line with a hose, clamps, and chamfering bit. 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 . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Features: . Thanks for the compliment--we look forward to your feedback! 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. So much it could be. 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.
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