running holley sniper without o2 sensor

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 . Holley Sniper Installation Supplement Please note, a Holley Sniper instruction manual, as well as some small parts that come with the . Sniper EFI 2300 Marine. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. PS, Once someone has a good 270/350 tune, everyone can use it. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. Then dialed back the cranking fuel quite a bit and that seemed to help some, but still having ongoing 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. It will crank and run great for 2-15 seconds then die. Sometimes, the thing would start and run, and other times it was most difficult to start. 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. When buying the Holley Sniper EFI kit, you've got two basic options. I hope that the next F/2F header is more O2 sensor friendly. I had the pink ecu signal wire connected to a bullet connector on the passenger side . 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. Joe, where did you end up installing the o2 sensor on your setup? Installed the sniper/MSD combo on my mildly built 460 KEM. $43 per night (Latest starting price for this hotel). This doesn't apply to race boats. 29. A third option would be to run your EFI system without an O2 sensor at all. Then if that doesn't work call the tech line they are great! MAP Sensors. $108.95. If the indicator reads "LOW Err" double check the connection to the CTS. Copyright 2017 Cyberspace Automotive Performance, Inc. All Rights Reserved. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. *Possible delays due to Covid-19 click for more information. The Ford 2300 engine uses a Holley carburetor, but it is in fact a licensed copy of a 32/36 Weber. 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. George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. My hand is holding the connector to the sensor. We may earn a small commission from affiliate links and paid advertisements. JavaScript is disabled. 5. Wideband vs Narrowband sensors - A narrowband O2 sensor is only calibrated to . . 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. 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. Advanced throttle body injection systems capable of transmission control and more. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. I took my time soldered every wire connection and routed all the wires carefully to avoid any emt issues. 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? 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. 4. 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. 10 min read. Specs. . Holley EFI Usb/Can Harness, Sniper Tbi. I have not gone back in to try to fine tune them. 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. Staff Writer. It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. When either of these operating temperature ranges is exceeded, the sensor can no longer be . So there is at least some probability of success. As far as a sensor goes, absolutely nothing. 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. So far so good. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. Only show this user. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. Are you running the latest software? The truck started fine after install, and ran down the road ok. Yes! He also explains how to properly install them. Welcome to Club Cobra! This Video Shows Ideal O2 Sensor Placement! I just discovered that was the case with my Fitech. Also some tips on preventing O2 sensor damage Here is one on start up tuning. We use cookies to enhance your experience while using our website. I thought about adding some sort of extra protection but never did. Still needs a EFI pump and return line. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. 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. Any exhaust down at engine level or lower will definitely get at LEAST some steam. I know from some of the other posts, there have been WBO2 sensor issues. It should be pretty straight forward what each of these values do. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. But this also makes me wonder what you did for the O2 sensor. I will be starting mine up this month, I hope it goes well, good luck to you. Precisely Adam. If you find that please let us know. 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? I'm guessing by snail, that's another name for the riser? Holley EFI Oxygen Sensor. The engines are rated at 170 hp each. 100% identical. 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. If this could be disabled it would be much better. Add to Cart . 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. We also use content and scripts from third parties that may use tracking technologies. Seems to have more low end tq and is much smoother power through out the rpm range. There is no problem getting this tuned and then running open loop. 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. well I have installed the Sniper on my 460 KEM (Ford) marine motor. The new Exhaust manifolds will have wideband O2 bungs for tuning. Does an yone have a pic of the O2 sensor in their exhaust? And who can blame them? My first install was on a stock manifold and I installed it in about the same spot Steamer (above) did, except 180 degrees the other way, facing towards the front of the vehicle. Systems that were already designed for marine efi. Bolt-on carburetor style EFI for your classic car or truck. Greatest struggle is the shift interrupt. 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 . This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. Spray a rag down pretty good with brake cleaner. Capability Range: Moderate Capability Range: Advanced I did--- Save your money and piece a fuel it together. O2 sensors are water proof. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? the motor has the following mods, Aluminum heads, Performer intake, Sniper and MSD ignition module. Has been since the 80's. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. All times are GMT-6. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). My boat is still in winter storage. The Sniper EFI master kit contains the most complete EFI fuel system on the market. Stock manifolds? If it's working to prolong the life of the sensor in the AEM Wideband kit then there is no reason to believe it wouldn't work with any other sensor. Capability Range: Advanced One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. Maybe my manifolds leaked the inside between the snail and the log?? functioning controller during engine operation. Was in marine engineering for years. The original Holley Sniper instructions are available on the Holley website if you have misplaced them. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to I have a 74 bronco, 302, mild cam. It does not look like anything particularly superior in concept. I do agree if he can get it tuned prior to fouling he can lock that tune and run in open loop. No worse than taking the reading in the intake manifold cross over. I am happy with Holleys no hassle replacement of the parts. running holley sniper without o2 sensorplymouth township mi police scanner. I received my replacement TPS and O2 sensor. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. Register now for free!) Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. Supports up to 650hp with Four 100 Lb/Hr Injectors! Conditions when closed loop o2 should be turned off. Sniper EFI Installation Guide. 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. Price Point: $$$. Items 1 - 21 of 21 Items. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. The spark must be manually tuned. EFI is the wave of the future. I'm about to embark on the same type of project. Did you use the Holley fuel pump and have you had any issues with it? Have you visually verified that all your injectors are spraying? In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. It appears that its a tuning issue. Followed all the instructions to the letter. I don't have enough experience with marine applications to know exactly what it will take to solve this. Holley part number 554-155. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. 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. 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 would send an Email to Chris at EFIsystempro. Sorry for the late reply. 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. A replacement clamp on would be an easy change out. The opposing pistons share a crankpin the way they do in a V-8, but the fact that there are only three cylinders on each bank means that the plugs fire at 90-150-90-150-90-150 intervals. I installed a holley sniper kit. As far as spark control, the Sniper will let you tune those 4 points, nothing else will. 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. I want to register an account for free right now! If you call, they usually let you put in your name and they get back to you. Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. 74 FJ40 confined to the swamp. But MAP sensors are very easy to physically implement and are inexpensive. I had an injector fail after a month of running and called the tech line who helped me figure that out. 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. is donald smith still alive; julie grant court tv cheerleader The O2 sensor burned out immediately. I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. 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. Why? It is the ratio between the mass of air and the mass of fuel in the air-fuel mix at any given moment. so far so good love the smooth power and easy starts. Copyright 2022 Holley Performance Products, Inc. All right reserved. I thought the clamp on style mount was a good idea in case the threads got buggered up when a sensor change might occur, and the threads are rusted up by then. I will get a new 02 sensor before I swap back to the orange box. And the relay and fuse were mounted along the firewall. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. This is the 02 sensor adapter I used. 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. Add To Cart. Attempted to make a parts run in my 1990 Third gen Chevy Camaro with a small block chevy 350 with flowmaster mufflers.I believed the issue in this video to b. The engine RPM when closed loop o2 will begin. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Search for the cheapest hotel deal for O2 Hotel Taipei Main Station in Taipei City. Idle and off-idle performance (particularly as the engine goes into gear.) Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. My question is concerning what happens a year later, when I have a top-end swap . YES! Sponsored Links (REGISTERED USERS DO NOT SEE THIS POST/AD! This page was generated at 08:35 AM. To simplify . I am a competent mechanic and I have checked all the usual suspect items. All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. 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 Sniper EFI throttle-body drops in place of your . Staff Writer. Holley EFI requires several pressure inputs in order to run an engine. The Sniper EFI throttle-body drops in place of your . Use a return fuel line. 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. Follow USCG rules about materials and fittings. Even if you are the sort to sort of shrug off safety regulation, consider that if there is an accident that results in a loss and an investigation, failure to follow applicable USCG regulation could result in either financial or legal liability, not to mention the rejection of insurance claims. 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.) Everyone raving about customer service is telling the truth! John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. 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.. But you still risk a little water running back at low Rs. Do you offer a USCG fuel pump kit? Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. 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.). Part # HM206. I am considering the Daytona Sensors Ignition module. He had one there that was run on a dyno then the fuel map was set and shipped back. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Everything about the fuel prime shot can be adjusted. 2014 FJ Cruiser - White - 4X4 - Loaded - . There was a 1.5 point difference in afr between banks. Newer ECMs have all the options to configure these functions. Free ground shipping regardless of order size! Thanks for the compliment--we look forward to your feedback! you don't want to read that loss. Thanks for that, Danny. View Holley Sniper EFI Self-Tuning Kit - Shiny Finish. Aftermarket headers are pretty much the only safe way to run an O2 sensor. It doesn't even mean that you can't do it. Holley EFI has the solutions you need to get your project up and running better than ever! 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. I will let you know what happens. Sensors that are installed in an exhaust must be connected to a properly - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? 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. $119.95. O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. May 1, 2018 They want you to angle it to keep it from fouling. This was for MPFI. Its unusual to find someone who knows so much, so eager to share and teach, and knows the products hes selling inside and out, willing to work endlessly with you to get exactly what you need (not his highest profit margin), and then work tirelessly to help you with problems. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. You are using an out of date browser. What is your fuel pressure at the carb during crank? I installed a holley sniper kit. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: Capability Range: Advanced (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. looking at doing the same. I recently installed the sniper setup on my stock 71 duster 340 4 speed. Bosch 17025 Oxygen Sensor #1 Best Seller . Ran about 5 seconds and died. holley efi. 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. You really want a bigger engine. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. Part# 534-199. The ones in the Bosch box come without warranty. 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. B/c what it sometimes perceives as a lean spike is actually raw fuel with no oxygen. The basic kit comes with the TBI unit, touchscreen controller, water temperature sensor, a wideband oxygen sensor, and all the necessary wiring. 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. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. 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. They are about 4 inches long, in-line between the log and manifold. I think installing a wide band O2 sensor in the manifold(s) is a great idea. RPM going up and down , miss firing and backfiring. The problem occurs when an excessive amount of oxygen makes its way from the intake port directly into the exhaust at idle and low engine speeds because of overlap.