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

. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. Wiring the Holley Sniper EFI system is equally easy. I've got the Howell EFI adapter installed in the riser of some standard Inboard Manifolds and it works great. The clamp-on that came with mine wasnt a good fit on my 2" pipe. After discussing it in this thread and talking with Holley's tech support, I decided . (If I am incorrect I heartily invite your comment at the bottom of this article!) Car runs perfect . 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.. 2023 Holley Performance Products, Inc. All Rights Reserved. A forum community dedicated to performance boat owners and enthusiasts. Good luck! Add to Cart . 29. 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. Not always the case with a boat. You must log in or register to reply here. JavaScript is disabled. The O2 sensor burned out immediately. To those who have installed the Sniper EFI units, please post up some photos of where you tapped the exhaust line to install the Oxygen Sensor's weld bung. The included fuel system places a 340LPH fuel pump in the tank, which can easily be . Do you offer a USCG fuel pump kit? Copyright 2022 Holley Performance Products, Inc. All right reserved. This page was generated at 08:35 AM. 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. 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. Thanks for that, Danny. Affiliate. I have not yet got it figured out. Was in marine engineering for years. . From there, the idea is that it will self-tune to the requirements of the engine. Can anyone share their experiences with this type of setup? Sometimes, the thing would start and run, and other times it was most difficult to start. . Pay close attention to the instructions on O2 sensor placement. YES! I've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. Found out that it was due to rfi/emi. Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. 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. To my knowledge, there is no aftermarket EFI fuel system suited to fuel the Sniper EFI system that exists on the market. 10 min read. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. You are using an out of date browser. Fuel prices at the marina are usually about a dollar a gallon more than at the local Racetrac/Wawa/wherever, and even more if you wisely opt for ethanol-free fuel. The very front would be the safest place. Stock manifolds? The engine RPM when closed loop o2 will begin. The problem is with the Holley computer when you turn on the keyit squirts a prime for a split second. Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. Its the Holley Pro Jection TBI mentioned by the above poster. Bolt-on carburetor style EFI for your classic car or truck. 02 sensors are very heat sensitive, and can detect an exhaust pulsation in a single Header tube, that's why we always wanted to position the sensor into at least 2 opposite firing tubes we running Headers. Depending on how fast you want one, there are plenty out there: The Cross ref numbers on the Holley forums and the Net is a Bosch 17025. Anything else is going to be a frustrating recipe for for failure. 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? Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! (probably with the edelbrock marine 2506 intake). Option 1 is to purchase and install one of the Holley EFI Dual-Sync Distributors on your engine. The sniper fit perfectly on the intake. The original Holley Sniper instructions are available on the Holley website if you have misplaced them. As far as a sensor goes, absolutely nothing. ), 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. HP comes from torque and rpm and rpm breaks things and increases wear. I want to register an account for free right now! In this case, the prime shot is good for cold, but too much for warm. Increasing efficiency is always a good idea. 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. Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. 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. May 19, 2021. 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. Be sure to disable autotune and remove the O2 sensor before it dies. Holley has a pump almost identical in size to the OEM pump and it's not difficult to change. . 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. Also the progressive link. KAYAK searches hundreds of travel sites to help you find and book the hotel deal at O2 Hotel Taipei Main Station that suits you best. I will get a new 02 sensor before I swap back to the orange box. I have a local customer with a pair of big blocks in his offshore boat that is eager to get started on this. Holley sent him a new one for free. Yellow Cold! As far as packaging goes, one comes in a Bosch box, the other in a Holley package. Use a return fuel line. I think I could run more boost but it's a real hand full right now. If you are not running the latest software stop guessing and go download it. Next, the new unit was installed onto the manifold. Price Point: $, Advanced throttle body injection systems capable of transmission control and more. . 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. So far so good. I want to remove the old fuel injected Mercruiser factory EFI on both engines because they have begun to be troublesome. Sniper EFI 4500 Marine. I'm 3" down from the bottom of the flange to center of bung. They are about 4 inches long, in-line between the log and manifold. I am happy with Holleys no hassle replacement of the parts. Holley sniper issue on newly rebuilt motor, Holley Sniper with Duraspark and timing control. Good luck to all. Sensors: Fitting: Threaded O2 . I have a 74 bronco, 302, mild cam. In the case of the car, you can generally get out and walk (run?) Greatest struggle is the shift interrupt. You'll also notice that the firing order is 1-6-5-4-3-2. I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. 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. This boat has a non-vortech motor with a 2 bbl gm intake i'll need to replace. John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. Free ground shipping regardless of order size! CTS (Coolant Temperature Sensor) - Reads engine temperature. 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. George Place the Sniper EFI throttle body on top of the new flange gasket on the manifold. When either of these operating temperature ranges is exceeded, the sensor can no longer be . 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. 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! Had to replace the oxygen sensor on my car for the terminator x after the original one failed and this fixed all my problems. you don't want to read that loss. I thought about adding some sort of extra protection but never did. Have to replace head gasket. Replaced and gapped to .45 all spark plugs. Sort. I really dont want any issues on the whitewater lol The throttle body has a built in fuel pressure regulator set at 58.5 psi. Hopefully this one lasts longer than the original. 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 . Not sure how well the sensor likes being that close to the port. Sep 14, 2021. But it is going to be a little tricky. Find a lower price anywhere and we'll beat it by 5%! It does not look like anything particularly superior in concept. Fortunately, it turns out there are some options. Shop Oxygen Sensors at Summit Racing. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. The test run was great, they have never run so well even when they were new with carbs. 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. If you call, they usually let you put in your name and they get back to you. If you find that please let us know. Description. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. Any word on this? Maybe my manifolds leaked the inside between the snail and the log?? Some parts are not legal for use in California or other states with similar regulations. Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. 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. Maybe this one has a shorter cable? 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. But MAP sensors are very easy to physically implement and are inexpensive. But you've found the right one for your Holley Sniper EFI System OR your Terminator X EFI System. FWIW, I called Holley to confirm the part number and they say the Bosch part number if 17212 (also available on Amazon for $64.78). 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. I want to register an account for free right now! It's hallmark is its simplicity--but in this case it is also it's shortcoming. This really applies to any O2 sensor regardless of EFI system. Here's the pic of the location with my header. Capability Range: Advanced Some logs have water up to just short of the port. 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. Customer Rating: 4.3 out of 5 stars: 4.5 out of 5 stars: I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. Holley Oxygen Sensor O2 Bung Weld-In Style; Larger Image. Once the tune is complete, the O2 sensor can be defeated or . I am just now ready to do the tuning this weekend. Part # HM206. looking at doing the same. What motor is this on? 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. That is defacto step one in trouble shooting fuel injection systems. Holley EFI has the solutions you need to get your project up and running better than ever! Supports up to 650hp with Four 100 Lb/Hr Injectors! Having selecting USCG-approved components, and sourced your O2 sensor adapter, there is but one more challenge--tuning. 2 Reviews. Price Point: $$$. 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. *Possible delays due to Covid-19 click for more information. Add To Cart. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to Capability Range: Moderate All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. Plug into the coolant temperature sensor. 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. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Install the throttle linkage to the Sniper EFI throttle body. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. Thanks for the heads up. $108.95. JavaScript is disabled. Jun 7, 2021. Your BluePrint Engine will be equipped with a Holley model 550-510, or 550-511 (identical except for finish color) on 4150 flanged intake manifolds. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. For now I have a genuine bosch O2 and Standard Automotive TPS installed. 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. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. In Stock. away. Posted By : / actual instructions in flowcharting are represented in /; Under :nose exercise before and afternose exercise before and after Why? Do you recommend in-tank or external fuel pump? 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. Dec 28, 2016. Anti-Seize pre-applied to sensor threads. Specs. When the Sniper EFI System received USCG approval at the end of 2018 this presented some hope for boat owners. 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. From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. Wideband Oxygen Sensor Extension Cable. 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. It will not fit on round or oval risers without a suitable flat area. This doesn't apply to race boats. The engines are rated at 170 hp each. 100% identical. In order to do this, it heavily relies on proper O2 sensor placement. So much it could be. But you still risk a little water running back at low Rs. EFI System Pro had everything I needed for my EFI upgrade. Part Number: 510-554-155. Currently has 2 bbl carburetor and mechanical distributor, mechanical fuel pump for 165hp. watch the values in the software for the o2.. once is is done "Heating" and starts to show AFR, wrap the rag round it. When it did keep running, the headers all started to smoke. As I have since added above, the Sniper simply isn't going to be the system to use to tackle this problem. I installed a holley sniper kit. Sniper EFI Releases new Stealth 4150 Models! Register now for free!) 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. The fuel pump question is the tough one. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. p.s. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. On my system, I machined in the O2 sensor right between the snail and the manifold of a . While those work great on an automobile, you likely won't begin to get these marine installations setup with a handheld. Full time feedback from the sensor is what the computer uses to refine the fuel table. The new throttle response was significant,fuel saving and gave me a turn key cold start.Still I can't have an idle speed under load and a turn key warm start. It would cost considerably more but a second option that would have added performance benefits would be to switch to a dry manifld such as the headers available from Custom Marine, Inc. Fine tuned the timing to 12-15 degrees. 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. Super helpful and knowledgeable. . I was thinking aluminum heads would run it up closer to 5,000 rpm. Put an end to cold start issues, hesitations, vapor . You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. #3. I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. For complete information about the cookies we use, data we collect and how we process them, please check our, actual instructions in flowcharting are represented in, Why Is Dave Blankenship Not On Oak Island Season 8, rhode island groundwater classification map. 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. 10 min read Video. 4. Never tried it myself or know anyone fwho has, but Little kids play hooky . big kids play. There are five significant plug connections to make from the throttle body: Plug into the oxygen sensor. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I recently installed the sniper setup on my stock 71 duster 340 4 speed. . (Assuming it actually releases in November and there are enough units for me to purchase and receive one in December). Then they had it repaired and back to me in 5 business days. I have tried several different settings to get it going, no luck. Howell indicates that this adapter was designed for the Chevy type Mercruiser manifold but that it should work on any similar marine wet manifold. Waiting for spring to put back together. Then if that doesn't work call the tech line they are great! EFI is the wave of the future. A replacement clamp on would be an easy change out. I would send an Email to Chris at EFIsystempro. Free ground shipping regardless of order size! - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? Joe, where did you end up installing the o2 sensor on your setup? Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? Please consult the Holley Sniper full manual and use this guide for supplemental clarification. Other countries likely have simmilar approval processes for marine engines. $43 per night (Latest starting price for this hotel). 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. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. 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. He had one there that was run on a dyno then the fuel map was set and shipped back. I have also installed a sniper system on a 350 Mercruiser and was wondering if you have done any tuning on yours yet? A third option would be to run your EFI system without an O2 sensor at all. And the relay and fuse were mounted along the firewall. 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. 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. 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. We use cookies to enhance your experience while using our website. Parts List: 1) Holley Sniper 2300 EFI Kit (Do not buy the kit with fuel lines and pump etc. Brand: Holley EFI Emission Code: 5: Material: . Tech Resources. O2 sensors are water proof. Using the throttle body's fuel pressure regulator will require a 5/16" fuel return line to the tank. Was told by holley tech support to make adjustments to the fuel prime percent and multiplier settings, played with those with no major improvement. The first option is to just buy the injector body and the controller with the wiring harness and sensors. http://s621.photobucket.com/albums/tt291/Mark11530/?action=view¤t=MAH05771.mp4, http://www.holley.com/data/Products/Technical/199R10226.pdf. No matter what I do, it will not start. 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 don't have enough experience with marine applications to know exactly what it will take to solve this. 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. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Let him re-jet the carb (a wee bit on the fat side for safety) and reset the timing and try again. The World's largest 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. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. turn on the ignition.but do not start the engine. 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. 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.