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. Maybe going all the way to the front is the way to go? This page was generated at 08:35 AM. Jan 20, 2019. I'm guessing by snail, that's another name for the riser? What I don't want to do is spend more money on the headers than on the fuel injection upgrade and new propeller set. #1. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. Other? YES! It does not look like anything particularly superior in concept. Any word on this? Yes! It may not display this or other websites correctly. It does this every time..when you start a warmed up engine, its too rich and starts poorly without throttle. 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. 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! That is defacto step one in trouble shooting fuel injection systems. 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. I will let you know what happens. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. 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. Conditions when closed loop o2 should be turned off. What motor is this on? You are using an out of date browser. Only a few hours on the motor but so far so good. If you have any exhaust leaks between the combustion chamber and 18-24" after the sensor you are going to have problems. 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. I think installing a wide band O2 sensor in the manifold(s) is a great idea. Also some tips on preventing O2 sensor damage My bet based on longer pump run, to make pressure, you have a leaking injector. Will I be able to control my ignition timing with the Sniper? I have searched thru the forum as much as I can, with not much luck. These often don't work with stock ECUs, so your best bet is to weld in a second bung for the wideband sensor. Tips on how to measure the correct location and other considerations when welding in an O2 sensor bung. The O2 sensor burned out immediately. EFI Systems based on Holley's world-class Dominator and HP ECU's. 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. 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. Yellow Cold! I had an injector fail after a month of running and called the tech line who helped me figure that out. I would back-burner the ignition control questions until you get the fuel injection working. 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. In Stock. Master ASE tech since 91. 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. Product Q&A . My Lightnings have a bung welded through the water and into the dry exhaust area at the collector. Register now for free! Add To Cart. 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. 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 am happy with Holleys no hassle replacement of the parts. Also, with Headers you loose 600 to 700 degrees between Head and bottom collector, you don't want to read that loss. Holley EFI 534-199 Wideband Oxygen Sensor Extension Cable Greatest struggle is the shift interrupt. 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. Is this a viable upgrade for my boat? 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. Has been since the 80's. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. Installing Holley Sniper EFI on a daunting, odd-fire V-6: Part 1 Installed the sniper/MSD combo on my mildly built 460 KEM. So far so good. I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. I tried holley tech support, no answer and put on hold for hours. Specs. 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. Holley Sniper O2 sensor replacement. Holley 554-100 NTK Wideband Oxygen Sensor. the Hamilton 212 pump is maxed out at about 4600 rpms, however it will provide about 10x the thrust that the berkly it is not as fast but haul much more load and work way better in white water. Holley EFI Sniper O2 Sensor Install - YouTube Wiring the Holley Sniper EFI system is equally easy. excessively rich mixtures), Mechanical shock (e.g. Have you visually verified that all your injectors are spraying? 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. Boats don't cruise at 60mph up and down hills. I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. Perfectly Taipei - 25 Must-See City Highlights | Taipei Travel Sniper EFI Releases new Stealth 4150 Models! Sniper EFI 4bbl Marine. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. For now I have a genuine bosch O2 and Standard Automotive TPS installed. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. I installed a holley sniper kit. Idle and off-idle performance (particularly as the engine goes into gear.) 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.). For a better experience, please enable JavaScript in your browser before proceeding. Holley Sniper - Oxygen Sensor Location | IH8MUD Forum I will be starting mine up this month, I hope it goes well, good luck to you. Bolt-on carburetor style EFI for your classic car or truck. Holley 2300 is their nomenclature for a 2-bbl generic fitment carburetor. Do you recommend in-tank or external fuel pump? If you have long tube headers, mount the sensor approximately 6-10" after the collector. I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. dropping a sensor on the ground), Extreme exhaust temperatures (Greater than 930 degC/1700 degF), Unheated sensor in exhaust stream. Then turn the engine off and "lock in" the tune in a non-feedback loop mode, and quickly remove the headers and wash them off to prevent damage and then swap to the manifolds, but that would honestly be a huge PITA. 1985 fj60 (sold back to Toyota), 1997 fzj80, 1971 fj40 with 75 2F. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. Those "flames" are still consuming O2 that would otherwise not be read by a sensor in the correct location. GA - As close to the lake as I can afford A powerful, MICRO BlueTooth in dash audio solution! There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. 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. Aftermarket headers are pretty much the only safe way to run an O2 sensor. Restore or update your Holley Sniper EFI System with this WBO2 Sensor 17025 Bosch 554-155 Holley. Waiting for spring to put back together. Installing Holley's Sniper EFI Quadrajet System on a 1970 Corvette It has about 18 hrs to date and is working great. The new Exhaust manifolds will have wideband O2 bungs for tuning. All sensors are tested to ensure they accurately report critical engine data to the . Jun 7, 2021. The O2 sensor burned out immediately. 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. The light shines in the darkness, and the darkness has not overcome it. Phil said water would still get up over the snail and knock out the sensor. I want to register an account for free right now! Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. Holley EFI requires several pressure inputs in order to run an engine. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? Here is one on start up tuning. Yes, this is an old thread, but it's an old unit. Sorry for the late reply, Douglas. Restore | Make | Philosophize | Eat | Drink | Be Happy | Let's Go Brandon! 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. 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. One of the benefits of using any Holley EFI system is that it self learns and tunes on its own. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. Other countries likely have simmilar approval processes for marine engines. Staff Writer. Advanced throttle body injection systems capable of transmission control and more. running holley sniper without o2 sensor - plural.works 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. I have a boat with twin 3.7 Mercruisers. Sensors: Fitting: Threaded O2 . You must log in or register to reply here. But you have to get it tuned. Have engine apart and head checked and cleaned at machine shop. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. I will keep the in-line pump for a spare. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. . We may earn a small commission from affiliate links and paid advertisements. Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. They have mods that help. I really dont want any issues on the whitewater lol O2 Sensor Mounting: The O2 needs to be mounted 6-8" after the merge in the header collector. (If I am incorrect I heartily invite your comment at the bottom of this article!) I hope that the next F/2F header is more O2 sensor friendly.