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. It has about 18 hrs to date and is working great. Please consult the Holley Sniper full manual and use this guide for supplemental clarification. In this video Holley's own Tom Kise explains oxygen sensors and where to place an 02 sensor bung in your exhaust. CUSTOM ART FOR CUSTOM NEEDS. pull the sensor out of the exhaust. You will still get some water on the engine side of the snails, mainly at low Rs. I have also picked up another .5 gallons per hr to about 9.25 gph. What exhausts are the best? Price Point: $, Advanced throttle body injection systems capable of transmission control and more. I was mocking it up at the time. But MAP sensors are very easy to physically implement and are inexpensive. When it did keep running, the headers all started to smoke. You should then have at least 18-24" of pipe after the sensor. Holley 554-100 NTK Wideband Oxygen Sensor. For a better experience, please enable JavaScript in your browser before proceeding. Followed all the instructions to the letter. 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. Register now for free!) Brass adaptor designed to install heated oxygen sensor in water-cooled marine exhaust risers. Categories. This is great information that can only get you closer to an ideal solution. $5 Off Your $100 Mobile App Purchase . Sniper EFI Quadrajet Marine. Bosch 17025 Oxygen Sensor #1 Best Seller . non biased Shelby Cobra related site! Or maybe I could just use a piece of spare/junk exhaust tubing, and bolt it to the manifolds and add a weldless O2 bung to it. Incense-veiled temples with exquisite carvings and paintings dating back to dynastic times blend seamlessly in streets of the modern city. I recently installed the sniper setup on my stock 71 duster 340 4 speed. Also in Tools, Shop Equipment & Chemicals, Cataclean - Fuel and Exhaust System Cleaner, Cataclean Diesel - Fuel and Exhaust System Cleaner, Distribution Blocks, Filters, Adapters and Fittings, Microswitch and Solenoid Mounting Brackets, Holley EFI CAN to USB Dongle - Communication Cable, Hooker BlackHeart Oxygen Sensor O2 Bung 2.5" Clamp-On Style, Holley EFI Terminator X Wideband Adapter Harness, Earl's Oxygen Sensor Weld Fitting (Weld Bung) - Steel. Top 10 Holley Sniper EFI Tech Tips Holley Technical Training Manager Tom Kise's top ten "suggestions" for Holley Sniper EFI System installation issues. Do you offer a USCG fuel pump kit? Oxygen Sensor is sold separately.Adaptor should be installed in a flat area of riser at least 6 before water blends with exhaust. I didn't read all this, but yes, the EFI system can be run without a WBO2 sensor. Here is one on start up tuning. I have not gone back in to try to fine tune them. Its the Holley Pro Jection TBI mentioned by the above poster. 2023 HOLLEY PERFORMANCE PRODUCTS, INC. ALL RIGHTS RESERVED. But this also makes me wonder what you did for the O2 sensor. 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. That's great--we look forward to your results! 10 min read. Thinking about this I think this will work very fine! Sniper EFI Releases new Stealth 4150 Models! Does an yone have a pic of the O2 sensor in their exhaust? Note that this is a different sensor than Holley uses for their Dominator/HP/Terminator/Avenger series. There can be leftover debris from manufacturing that have been washed down and are now clogging one. All of the wiring begins at the throttle body and connects outward from there. My bet based on longer pump run, to make pressure, you have a leaking injector. Service Oxygen Sensor for Sniper EFI Systems, Service Oxygen Sensor for Terminator X Systems. 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. 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. Throttle body mounted ECU - no extra boxes to mount. From time to time we receive phone calls from individuals who are interested in converting their carbureted boat motor to fuel injection. (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. And the relay and fuse were mounted along the firewall. Newer ECMs have all the options to configure these functions. The engine RPM when closed loop o2 will begin. Doesn't look like it will have an O2 sensor. . a leading manufacturer of aftermarket Wideband O2 sensor kits, the following may damage or destroy oxygen sensors: . Bolt-on carburetor style EFI for your classic car or truck. I am a competent mechanic and I have checked all the usual suspect items. blue doberman puppies. Sent unit back to Holley. Emissions. I will get a new 02 sensor before I swap back to the orange box. Sorry for the late reply, Douglas. About your only location is in that short area from the log to the port face. Has anyone run an O2 sensor in an EFI on a marine engine? Seems to have more low end tq and is much smoother power through out the rpm range. No worse than taking the reading in the intake manifold cross over. 2 Reviews. 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. Comes VERY complete.throttle cable bracket, kickdown bracket, base plate studs & nuts, heat shrink type connectors, and pretty decent instructions as well. If this could be disabled it would be much better. Will I be able to control my ignition timing with the Sniper? Yes! . Could show a lean condition when in fact it really isn't. One comes in the form of a Marine O2 Sensor Adapter from the folks at Howell EFI. The Sniper EFI throttle-body drops in place of your . Tune the delay relay timing to just miss the prime shot.For cold starts, a simple push-button or switch "choke" override to power the relay during prime would provide it. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. Oxygen (O2) Sensor - Is an electronic device that measures the proportion of oxygen (O2) in the exhaust gas. OT pipes may be out of the question, but with the water dumps put in at the transom, ala Gil or Rewarder OT pipes, you could get dry readings with bungs a little above where they bolt onto the logs, I would think. 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 had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. I found this in the instruction manual for the older commander 950 system. For now I have a genuine bosch O2 and Standard Automotive TPS installed. Shop Oxygen Sensors at Summit Racing. I installed a holley sniper kit. I installed a Holley sniper system on my car and I've been fighting it for 2 weeks now. Anyone have a good place to find a genuine Bosch O2 replacement sensor without paying $110? The wiring was a bit of a mess. holley efi. 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. http://forums.holley.com/showthread.ension-Harness, http://forums.holley.com/showthread.4388#post54388, If this is your first visit, be sure to Taipei has dozens of world-class restaurants where gourmets can sample the most authentic Chinese cuisines. 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. If you let it cool down again, does it start up fine? Replacement Bosch Wideband Oxygen sensor for Sniper EFI and Terminator X systems. 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. 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. I'll let you know how it works out. It may not display this or other websites correctly. Ran about 5 seconds and died. I'm looking for some more practical and scenario-specific advice; that's one small piece of it. No matter what I do, it will not start. The oxygen sensor should be mounted at a point where it can read a good average of all the cylinders on one bank. Air-Fuel Ratio (AFR) - The most common reference term used for mixtures in internal combustion engines. Enter The 2023 LS Fest West Trip Sweepstakes Today And Join Us In Las Vegas! 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. Capability Range: Moderate When problem-solving this type of issue, consider when and how you could use a work-around. Without Headers Steamers location (above) is perfect, up close to the engine where you have not lost much heat. Purely coincidence about the '2300' number. 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. Capability Range: Moderate Hopefully this one lasts longer than the original. That would be for individuals that run the OEM exhaust manifold, as well as individuals that run headers. Part# 554-155. The new Exhaust manifolds will have wideband O2 bungs for tuning. I will change and be using an in-tank pump when I install the new 120 gallon tank this winter. Holley sent him a new one for free. I did--- Save your money and piece a fuel it together. So far so good. Look at the bottom.. I don't have enough experience with marine applications to know exactly what it will take to solve this. 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. 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? From there, the idea is that it will self-tune to the requirements of the engine. Part # HM206. i'm not aware of a universal aftermarket EFI fuel pump kit that is USCG approved. Part # 554-155. Capability Range: Advanced I have a boat with twin 3.7 Mercruisers. Is Holley working on a complete marine package or planning to in the future? 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. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Distributor and ignition box? I also capped off the regulated return line with a hose, clamps, and chamfering bit. I had a blue wire coming out of the firewall that met this need, but it was already hooked-up to the + side of the coil and the Duraspark box. If the indicator reads "LOW Err" double check the connection to the CTS. It doesn't even mean that you can't do it. You will need an O2 sensor to measure fuel needs, but it could be tuned manually like in the old days. I had an o2 sensor fail on a pass yesterday, and flatline at 11.5afr. 2. Im almost at your exact same setup on a Redline 460/Berkeley pump but waiting to pull the trigger on the Sniper until I can pinpoint exactly where I can install the o2 sensor without the wet exhaust damaging it. 29. Q2. It's a compact HP pump and cooler assembly. Do you recommend in-tank or external fuel pump? Then if that doesn't work call the tech line they are great! He had one there that was run on a dyno then the fuel map was set and shipped back. 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. Bolt-on carburetor style EFI for your classic car or truck. Next, the new unit was installed onto the manifold. Price Point: $$$. The first thing to consider here (if you are in the USA) is US Coast Guard (USCG) Safety Approval. Categories. While this is extremely unlikely if you are having immediate, back-to-back O2 sensor failures you should make the effort to rule this out. I tried holley tech support, no answer and put on hold for hours. Installed a Lokar throttle linkage bracket custom made for the Sniper, removing the old one that had been on my Holley 750. It flows 850 cfm and can support up to 650 horsepower. As far as a sensor goes, absolutely nothing. If you're thinking that you've read everything above and are ready to toss the carb on your marine engine then take this handy quiz to make sure! You shouldn't feel too bad about that lack of knowledge, because many boat owners either don't realize that the moisture present in their wet exhaust manifold will kill the wideband O2 sensor required by an EFI system. Sniper EFI 4bbl Marine. Good luck to all. Runs like a champ now. The Holley Sniper system sells for $999.95, installs in under 2 hours, and requires only an O2 sensor, a temp sensor (both included), an electric return-style fuel pump, and four-wires to connect.. Quote Reply Topic: Holley Sniper Posted: Jan/05/2022 at 2:01pm . The clamp-on that came with mine wasnt a good fit on my 2" pipe. *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. - The sales brochure refers to Integrated Ignition Timing Control and Coil Driver. The very front would be the safest place. Only show this user. Stay up to date with the latest releases, events, promotions and more. Bolt-on carburetor style EFI for your classic car or truck. In a horizontal or if pointed upwards it can collect exhaust condensation liquids upon start up. 4. It appears that its a tuning issue. So I bought the progressive linkage but you then have . Maybe this one has a shorter cable? Howell indicates that this adapter was designed for the Chevy type Mercruiser manifold but that it should work on any similar marine wet manifold. Sadly, no. Yeah, it may sound hokey to some, but is just one option to solve the issue where you are and with what you have. Any exhaust down at engine level or lower will definitely get at LEAST some steam. is donald smith still alive; julie grant court tv cheerleader Pricing was reasonable, shipping was prompt and Chris helped me with a wiring question during my install. I'm 3" down from the bottom of the flange to center of bung. replaced my original terminator x sensor that was mounted in an exhaust that took on some water and killed the original sensor. Yes, this is going to be an added expense, however, it will help guarantee your success. It will crank and run great for 2-15 seconds then die. John 1:5, 1969 FJ40 2F with Holley Sniper EFI, Power Disk Brakes Front & Rear, Downey, Your post has peaked my curiosity. Master ASE tech since 91. Will I be able to run both systems off of one fuel pump? From there, our highly trained factory refurbish technicians flow the original fuel injectors. 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. I know from some of the other posts, there have been WBO2 sensor issues. New 100 owner, long time cruiserhead - https://forum.ih8mud.com/threads/new-100-owner-long-time-cruiserhead.1300238/. If you've done some automotive fuel map tuning before, you can likely overcome this challenge. Are you holding your RPMs back with the MSD for some reason? 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. $119.95. Assuming that your current ignition works well with the marine carburetors it will continue to work well with the Sniper EFI System. 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. My question is concerning what happens a year later, when I have a top-end swap . *Possible delays due to Covid-19 click for more information. Similarly, no multi-point fuel injection (MPFI) systems existed that were USCG approved. Apr 13, 2017. with the extension. Spray a rag down pretty good with brake cleaner. so mine has been pretty good but 1 out 20 starts you can hear the fuel pump run longer then normal..when it does that it will light off then diebut if i put my foot to the floor it will start..still working on that 1..timing i am running 12 cranking.20 idle.40 cruze.35 wotstill playing with all of this..Mine is also a sniper stealth. Having the same problem with my sniper as well, intermittent hot (and cold) start issues. Homemade body parts replace the originals as they rot away but it's a 40 on the inside. Pay close attention to the instructions on O2 sensor placement. Part Number: 510-554-155. https://www.efisystempro.com/efi-pro-hangout/sniper-installation-tips-holley-tom-kise, https://www.efisystempro.com/efi-prng-engine-startup-sniper-terminator-x-stealth. Classifieds - Engine/Transmission/Transfer Case, BJ42 | FJ43 | BJ44 | FJ45 | FJ45LV | HJ47, North American Clubhouses - Central Region, CA.AB- Rocky Mountain Land Cruiser Association, CO/WY- Horsetooth 4 Wheelers Cruiser Club, TX- Lone Star Land Cruisers - Austin Chapter, TX- The White Trash of the Elwood Chapter, CA.BC- Okanagan-Similkameen Land Cruisers, NV- Battle Born Cruisers of Northern Nevada, Vendors: Accessories - Electronics - Recovery. You'll also notice that the firing order is 1-6-5-4-3-2. This requires a considerable additional investment but as long as you're doing things you're not going to do them half-way, right? Product Q&A . Add to Cart . 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. I want to register an account for free right now! Who knows. EFI EFI kit electronic fuel injection. 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. 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've been building a TBI system from GM parts to use on a 1987 Wellcraft with the Mercruiser 4 cylinder engine. Only a few hours on the motor but so far so good. Bolt-on carburetor style EFI for your classic car or truck. 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? Prime cannot be adjusted on this old unit. May 1, 2018 They want you to angle it to keep it from fouling. Menu. Just a rumor. All times are GMT-6. 02/25/2020. This really applies to any O2 sensor regardless of EFI system. He also explains how to properly install them. - Do you know of a Carburetor Builder who has addressed the Coast Guard certification issues with the Sniper EFI? Holley EFI Oxygen Sensor. I have a 74 bronco, 302, mild cam. Q3. 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. Holley EFI Usb/Can Harness, Sniper Tbi. Price Point: $$, Robust, feature-rich multi-port EFI systems offer easy plug-and-play late-model V8 engine swaps. I do believe that the Holley EFI ECU's have the capability to be programmed to work in this application, but have not yet found anyone who has tackled this task and been fully successful.If you (or anyone else) does make some progress on this, please reply here and let us know what works. Find a lower price anywhere and we'll beat it by 5%! Sorry for the late reply. To take advantage of all the site features, please take a moment to register. We can hear the initial fuel spray into the body, but it appears that its not enough to start the engine while hot. Followed all the instructions to the letter. Price Point: $$, EFI Systems based on Holley's world-class Dominator and HP ECU's. 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. the engine not running. Got a picture? Greatest struggle is the shift interrupt. The truck started fine after install, and ran down the road ok. To simplify . Use a return fuel line. 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. Copyright 2022 Holley Performance Products, Inc. All right reserved. Also some tips on preventing O2 sensor damage Affiliate. so far so good love the smooth power and easy starts. If you are not running the latest software stop guessing and go download it. QFI-500 Oxygen Sensor. The bottom line is that trying to run EFI on a marine engine is not something you can do as an afterthought. Holley EFI has the solutions you need to get your project up and running better than ever! 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. Staff Writer. The right side o2 was obviously reporting a fat 10.3 afr as a result, but the car still went 139mph, LOL. Vega$69. An update from Al:After installing them I used the auto tune program on the Holly HP V4 software and they are working great. Warranty Information. The Ford 2300 engine uses a Holley carburetor, but it is in fact a licensed copy of a 32/36 Weber. Bolt on 4150 Flange Carburetor Replacement. 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. Sort. Wherever you go, the cultural kaleidoscope of Taipei showcases exhilarating diversity. That sounds like one solution. While the Sniper has an absolutely outstanding internal ECU, the current model does not offer any laptop programmability. Replaced and gapped to .45 all spark plugs. Full time feedback from the sensor is what the computer uses to refine the fuel table. Fuel economy went from 12.5 to 13.5 gph to 10 gph. 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. Holley Sniper EFI Self-Tuning Kit - Black Ceramic Finish. The Fora platform includes forum software by XenForo. 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. Welcome to ClassicBroncos! Phil said water would still get up over the snail and knock out the sensor. Innovate Motorsports HBX-1 Bung Extender. 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. I have twin 502 factory fuel injected Mercs and want to go to adaptive EFI. This completes the basic installation of the Holley Sniper EFI 4150 Super Sniper 1250/650 kit. The target A/F value based on load or MAF cfm, and engine speed. Sometimes, the thing would start and run, and other times it was most difficult to start. In order to do this, it heavily relies on proper O2 sensor placement. Why? Dec 28, 2016. Joe, where did you end up installing the o2 sensor on your setup? Ive got a set of bassett headers for a BBC, ill see if they can fit under the transom. Anti-Seize pre-applied to sensor threads. $132.95. 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. If you're not running one (or if you are and the water has killed it) then it is not surprising that you are running rich. This product works with Holley EFI wideband oxygen sensors, part numbers 554-100 and 554-101. EFI Systems based on Holley's world-class Dominator and HP ECU's. 74 FJ40 confined to the swamp. Add To Cart. Put an end to cold start issues, hesitations, vapor . However, advanced tuning software is available for the Sniper EFI System that allow them to be tuned by a competent professional with experience tuning marine applications. Some logs have water up to just short of the port. In this case, the prime shot is good for cold, but too much for warm. The Sniper EFI throttle-body drops in place of your . (Image/Wayne Scraba) The throttle body is a bolt-on replacement for a carburetor. 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. Ref: https://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/I heard of the new Sniper EFI from some chatter on OffshoreOnly.com. Advertising . 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. 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, All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. - You are currently viewing the forums as a GUEST. Sniper EFI Releases new Stealth 4150 Models! But you have to get it tuned. 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. away. Advanced throttle body injection systems capable of transmission control and more. I have not had it on the dyno with the sniper, but would guess probably about 400 to 410 hp and well over 500 tq.I did use the holley pump that came with the sniper. Thanks for the compliment--we look forward to your feedback! Wiring the Holley Sniper EFI system is equally easy. What Is Pinion Offset, And How Does That Affect You? 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.