Once the tune is complete, the O2 sensor can be defeated or . This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. Maybe this one has a shorter cable? Everything about the fuel prime shot can be adjusted. i thought about it, but after $3400 on an EFI alone and an entirely new rigged boat Im having a hard time forking out another 2000 for an exhaust when I may just do an open loop My buddy machined up a set of spacers I sketched out for him. 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. Distributor and ignition box? Otherwise I have to check for a place in my gasoline tank to put the lines in. I want to register an account for free right now! Wideband Oxygen Sensor Extension Cable. 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. I had the pink ecu signal wire connected to a bullet connector on the passenger side . They are about 4 inches long, in-line between the log and manifold. 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. This Video Shows Ideal O2 Sensor Placement! Product Q&A . Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. My bet based on longer pump run, to make pressure, you have a leaking injector. Newer ECMs have all the options to configure these functions. Held finger over IAC and it ran better, the thing was just wide open all the time and had nothing to suck. You are using an out of date browser. These types of adjustable on-delay timer relays are on sites like Amazon for less than $10 up to $15. 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, I am considering the Daytona Sensors Ignition module. 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. 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. A replacement clamp on would be an easy change out. While this is extremely unlikely if you are having immediate, back-to-back O2 sensor failures you should make the effort to rule this out. The Sniper EFI throttle-body drops in place of your . We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. Holley Sniper EFI Wideband Oxygen Sensor. Because the fuel maps are built on a speed-density (ie, engine RPM versus manifold air pressure) fueling strategy. (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Pricing was reasonable, shipping was prompt and Chris helped me with a wiring question during my install. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. Followed all the instructions to the letter. I also capped off the regulated return line with a hose, clamps, and chamfering bit. 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. Features: . I have a 74 bronco, 302, mild cam. If a cruiser with enclosed engine compartment, not a lot you can do to eliminate water or at least water vapor in the exhaust. I mounted it here attempting to protect it from the deep water I play in and from lots of branches I encounter. Description. Affiliate. The in tank pump is quieter, will normally run cooler and should last longer. . Bolt on 4150 Flange Carburetor Replacement. Vega$69. running holley sniper without o2 sensorplymouth township mi police scanner. Visit their website for more details. 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. If there's anyone willing to read a bit and offer advice about what to do when doing a top-end swap (when you may be in a scenario with a new top-end that's the EFI isn't calibrated for AND you can't have an WBO2 sensor connected), please let me know. I wanted to let you all know, I have modified a mercruiser Cool Fuel Gen 3 module(mounted on the engine) to provide fuel to a sniper. He knows his stuff, gets back quickly to you, etc. Good luck to all. QFI-500 Oxygen Sensor. I am in the middle of a repower of twin BBC 481, mild cam which will need to be recarbureted. Adam. Staff Writer. Sorry for the late reply. The following vehicles are considered Racing Use Only Vehicles: Holley is the new standard in EFI! 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. 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. We may earn a small commission from affiliate links and paid advertisements. Followed all the instructions to the letter. In the end I ended up using a Fuel Control cell made by Pleasure Craft Marine for their 351W engines. Do you offer a USCG fuel pump kit? I had an injector fail after a month of running and called the tech line who helped me figure that out. Price Point: $$$. Specs. Here's the pic of the location with my header. 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 will keep the in-line pump for a spare. EFI Systems based on Holley's world-class Dominator and HP ECU's. Warranty Information. In this case, the prime shot is good for cold, but too much for warm. Full product line and accessories at excellent pricing. Free Shipping - Holley Sniper EFI Oxygen Sensors with qualifying orders of $99. 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. Part# 554-155. The Sniper EFI master kit contains the most complete EFI fuel system on the market. That is defacto step one in trouble shooting fuel injection systems. Then they had it repaired and back to me in 5 business days. Prime cannot be adjusted on this old unit. p.s. I am just now ready to do the tuning this weekend. The truck started fine after install, and ran down the road ok. 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. Sorry for the late reply, Douglas. Emissions. 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. Note, that is not a crack in the exhaust manifold, just a shadow from a casting flaw. Part # 554-155. 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. A forum community dedicated to performance boat owners and enthusiasts. Part # HM206. There are drawbacks to that (as your tuner can explain in more detail) but it is doable, provided the system is correctly tuned initially. Went with around .525 lift, 270 duration on a 114 LSA and the car was sucking vacuum like a new hoover. The adapter will be fastened in both metal parts so that no water will reach the O2 sensor. The test run was great, they have never run so well even when they were new with carbs. Shop Oxygen Sensors at Summit Racing. The clamp-on that came with mine wasnt a good fit on my 2" pipe. 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. For a better experience, please enable JavaScript in your browser before proceeding. A 90-degree V-6 has three shared crankpins set 120 degrees apart. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. Brand: Holley EFI Emission Code: 5: Material: . The engine floods and it is embarrassing when leaving a lock. Holley part number 554-155. I have about 30 hrs on the unit and it just keeps getting smoother with every hr of run time. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. The Sniper EFI could very well be one of the easiest to set-up fuel injections systems ever. Only a few hours on the motor but so far so good. I will get a new 02 sensor before I swap back to the orange box. you don't want to read that loss. 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. 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! About your only location is in that short area from the log to the port face. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. If this is a first time effort, find a tuner in your area with marine experience. RPM going up and down , miss firing and backfiring. It will crank and run great for 2-15 seconds then die. There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. Initial Calibration in Basic Configuration. I have searched thru the forum as much as I can, with not much luck. This doesn't mean it can't be done.