running holley sniper without o2 sensor running holley sniper without o2 sensor

I will let you know what happens. It is possible for the ECU to have an internal failure that can kill O2 sensors. The O2 sensor burned out immediately. I'm about to embark on the same type of project. This was for MPFI. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. Well an update on the Sniper install. 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. Bolt-on carburetor style EFI for your classic car or truck. I myself will convert my 2 302's (Volvo Penta 5.0 l AQ231A) from carbs to EFI; I must find out everything before I start work on the engines, then I am satisfied to start. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. Wondering how you are progressing with this? 1985 fj60 (sold back to Toyota), 1997 fzj80, 1971 fj40 with 75 2F. Found out that it was due to rfi/emi. One of the most common causes of poor idle is improper O2 sensor placement or trying to run closed loop at idle . 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. Anything else is going to be a frustrating recipe for for failure. I purchased the Holley HP MPFI system and went to the lake with it. Seems to have more low end tq and is much smoother power through out the rpm range. I'm using the NTK sensor. It's a compact HP pump and cooler assembly. Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. If you have long tube headers, mount the sensor approximately 6-10" after the collector. 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. pull the sensor out of the exhaust. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. 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). Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. If this could be disabled it would be much better. I think installing a wide band O2 sensor in the manifold(s) is a great idea. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. Look at the bottom.. #1. Since your existing low-pressure fuel system is not going to work with the Sniper EFI System this puts you in the unenviable position of choosing between USCG compliance or EFI. After a few tries by jumping the starter solenoid I then realized the ignition key was in the off position. There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. I recently installed the sniper setup on my stock 71 duster 340 4 speed. 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. Stay up to date with the latest releases, events, promotions and more. Homemade body parts replace the originals as they rot away but it's a 40 on the inside. 5. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. They are the only ones got me a holley usb to can cable fast. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. $102.95. 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. Sniper throttle body linkage opens all four barrels evenly when you depress the throttle. JavaScript is disabled. Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . To simplify . He also explains how to properly install them. 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. If a cruiser with enclosed engine compartment, not a lot you can do to eliminate water or at least water vapor in the exhaust. QFI-500 Oxygen Sensor. The truck started fine after install, and ran down the road ok. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. On my system, I machined in the O2 sensor right between the snail and the manifold of a BBC. O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. But it is going to be a little tricky. Holley Sniper O2 sensor replacement. 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. Oops, after that it cranked right up.Idle was set to 950rpm so after the vid was cut off I lowered it to 820rpm and it was purring like a kitten.EFI for dummies. Copyright 2022 Holley Performance Products, Inc. All right reserved. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. Supports up to 650hp with Four 100 Lb/Hr Injectors! It flows 850 cfm and can support up to 650 horsepower. It will flood itself out and won't start back, just crank and crank. Yellow Cold! Add to Cart . Car runs perfect . Replaced and gapped to .45 all spark plugs. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. Find a lower price anywhere and we'll beat it by 5%! The clamp-on that came with mine wasnt a good fit on my 2" pipe. Make sure to put anti seize on the threads. Ideally I'd want the power plant running as efficiently as possible, but I'd sure like the benefit of EFI over carb. Doesn't look like it will have an O2 sensor. Pay close attention to the instructions on O2 sensor placement. Holley EFI Usb/Can Harness, Sniper Tbi. Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! Any exhaust down at engine level or lower will definitely get at LEAST some steam. The in tank pump is quieter, will normally run cooler and should last longer. Warranty Information. The Sniper EFI master kit contains the most complete EFI fuel system on the market. 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. 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. Some parts are not legal for use in California or other states with similar regulations. Sniper EFI Releases new Stealth 4150 Models! is donald smith still alive; julie grant court tv cheerleader Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. $108.95. For a better experience, please enable JavaScript in your browser before proceeding. 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. With over the transoms you might get away with it if the water is introduced at the very very end, and the O2 is mounted right at the log. The 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. Good luck to all. 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. Yes! I've installed several of these adaptive EFI's on cars with great success. Free ground shipping regardless of order size! You must log in or register to reply here. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. Prime cannot be adjusted on this old unit. 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. Stay up to date with the latest releases, events, promotions and more. 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. I recognize that it would be an absolutely tremendous investment, but based on the overwhelming response we get to this post I am pretty confident that the market is there. Seems to LEARN much faster than the Fitech did. Only show this user. 3. Holley sent him a new one for free. Phil said water would still get up over the snail and knock out the sensor. While these base maps are generally quite good for cars they are going to be pretty far off in the case of marine applications. 02/25/2020. In the case of the car, you can generally get out and walk (run?) 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. It just means that if you are thinking you'll install this, crank it, and pull away from the dock with complete success you might be in for some disappointment. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. Have to replace head gasket. The truck started fine after install, and ran down the road ok. So far so good. 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? so simple check first, whats the fuel pressure? 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. He had one there that was run on a dyno then the fuel map was set and shipped back. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. Super helpful and knowledgeable. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. Bolt-on carburetor style EFI for your classic car or truck. It's hallmark is its simplicity--but in this case it is also it's shortcoming. 3. I have a 74 bronco, 302, mild cam. Given the traditionally poor fuel economy of carbureted marine engines, we feel your pain. Could show a lean condition when in fact it really isn't. 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? I bought a new holley sniper , dual sync dist., coil, and holley in tank fuel pump, When engine got hot it would go crazy. Everyone else was backordered several months. 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. Thanks again for writing! Sensors that are installed in an exhaust must be connected to a properly I am considering the Daytona Sensors Ignition module. What Is Pinion Offset, And How Does That Affect You? http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. They have mods that help. "Old Yeller" gets Holley EFI Sniper O2 Sensor Installedhttps://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_stealth_4150/sniper_. The Sniper EFI throttle-body drops in place of your . Sep 14, 2021. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? ), 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. Then they had it repaired and back to me in 5 business days. Shop Oxygen Sensors at Summit Racing. $132.95. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. I've seen O2 sensors in water jacketed headers that have worked fine for years. But you've found the right one for your Holley Sniper EFI System OR your Terminator X EFI System. But this also makes me wonder what you did for the O2 sensor. The new Exhaust manifolds will have wideband O2 bungs for tuning. so far so good love the smooth power and easy starts. Mine is right where Steamers is, and works well with my AFI TBI. Then if that doesn't work call the tech line they are great! Dec 28, 2016. I have tried several different settings to get it going, no luck. As far as warranty goes, Holley products are covered by a 90-day warranty against defect in material or workmanship. 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? 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. There was a 1.5 point difference in afr between banks. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. Sorry for the late reply, Douglas. John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. PS, Once someone has a good 270/350 tune, everyone can use it. You must log in or register to reply here. -- I particularly like the Daytona Sensors Approach to the Ignition Curve.- Are you pursuing Coast Guard Certification for the Sniper_EFi? For the most part each engine wants a bit of its own timing set-up IMHO, you boat owners with a 270HP 350 (or any other config) may want 350HP but upgrading it to that level will reduce or eliminate reliability. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. 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. Jun 7, 2021. Good luck! 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. My question is concerning what happens a year later, when I have a top-end swap . For the most part, the small harness is plug-and-play. Will I be able to run both systems off of one fuel pump? As always, your results may vary and batteries not included. 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.