marine fuel injection conversion 351 windsor

I converted my 351 to multiport fuel injection by selling my 205 and buying a 98 Ski Nautique. Its the most universal type of Electronic Fuel Injection system, but its not ideal for high performance engines. That estimated volume of air is then corrected for temperature and pressure. Yes, I am interested in how things are running also. EFI Conversion on a 76 PCM 351W - CorrectCraftFan.com Forums The proper value for each of these can only be determined if we have an accurate value for Load. Supports Up To 650 HP. Saves fuel! Smaller sizes are slightly larger than stock and are a great first step for stock or mildly modified engines. For the best experience on our site, be sure to turn on Javascript in your browser. A fuel pump works to supply a definite amount of fuel to all cylinders irrespective of the load at a correct time interval based on the firing order. There are two reasons why an aftermarket EFI manufacturer wants to sell you a speed density system. All that is needed outside of the kit is a marine fuel pump and a bung for o2 sensor in the exhaust The rest is plug and play and the system tunes it self. But if you'd like to modify those tables to make more, you certainly can. I am very interested in this myself. I found this kit on ebay for $1000. In the end, our system will cost you much less than what the others do and will give you much better results. MPFI Kit $2900 For that reason, we use only the finest parts available. Ford 351 Windsor Complete Mass Air Sequential Port EFI System. Flex Fuel. Many of those items are available in separate packages in the aftermarket. Some engine selections start at a higher cost due to a larger throttle body and larger injectors For modified engine kits please click here Tuners who have used our system agree its as simple as simple can be to use. One is Mass Air and the other is Speed Density. My system cost me a total of about 600$ (and a pretty steep learning curve). The other efi/ tb efi systems from the marinizers don't appear any different than the automotive ones other than a flame arrestor. Additionally, the Pro-M EFI PCM uses an adaptive strategy to learn your engine's fueling needs. I would be more suspicious of it just because it was replaced 2 years ago very common problem, especially with new parts. A Mass Air engine management system uses a Mass Air Meter to directly measure the mass of the air being ingested by the engine at any given time. waste of time and money to try to convert. In order to participate in our discussions, you must register for a free account. Off-roaders it works!. The Pro-M EFI system provides a combination drivability and quality typically only found in the OEM . That sensor mount looks like they used a spud washer assembly off a urinal! Estimated Ship Date: Monday 2/27/2023. A proper tune is a blend of all three of these things. Suspension & Steering. Holley just brought EFI within range - introducing Sniper EFI master kits! This page was generated at 02:59 AM. Probably most importantly, you need to be capable of following directions and working methodically. The tuner still has to dictate to the ECU what the air/fuel ratios will be, and without a value for load, its all just guesswork. I would not expect a noticeable change in fuel consumption, however the drive-ability and stat-up qualities should be noticeably improved. It sounds complicated but it isn't. Also had great support from the Edelbrock team. If you prefer to have the work done for you, then anyone meeting the requirements above can perform the work. Im not sure when I going to pull the trigger on the full conversion, but I wanted to start with the O2 modification and maybe the fuel return line to the gas tank. PF4 EFI has the potential for improved fuel economy when upgrading from a carburetor. Pro-M constantly strives to take advantage of new technology and develop new components and software that will make what we think is already the best even better. Our Load based system makes forced induction super easy. The process Tell the ECU what air/fuel ratio you want under the varying operating conditions. My carb is doing great starting and idle runs well, just having issues with the accerleator pump when pulling skiers up, 1-1.5 gph?? The exception to that rule is electronic throttle control, but that topic is not relevant for the purposes of this article. All Rights Reserved. Decel Fuel feature cuts fuel while decelerating. He used a FAST set up and works really well but not sure how it would work in a marine application. I had great performance with the PF1 but this new system was so much better. How big of a pain is this process and where do I start? The foundation of AFI is expertise. They can do this because they use the same engine combination over and over again but understand that every OEM management system uses Load. Pro-M EFI uses two wide band O2 sensors (One in each bank) to provide the most accurate fueling possible under any operating condition. And lastly, it's for a regular rotation motor, the distributor gear is different for reverse rotation motors. Jumbo aluminum fuel rails and mounts. OEM level control of an aftermarket add-on. With Pro-M EFI the ignition timing is controlled by thePro-M EFI PCM! Pro-Flo 4 EFI systems feature a high performance Edelbrock intake manifold with a 1,000 cfm throttle body, fuel rails and individual injectors for each cylinder. do you idle every where ? It is that simple. Marine O2 Sensor Adapter Plate - Affordable Fuel Injection The problem is that it is a gas sucking pig. The Pro-M EFI system can be as simplistic, or as sophisticated as the user wants it to be. It is easy to install, simple to use, and allows for customization of virtually every electronically controlled powertrain function. The three big things that need to be converted are: Welcome to PLANETNAUTIQUE! Again, herein lies the beauty of mass air. As boats age I really prefer the simplicity of a carb. No one else can make this claim. That includes cold starts, idling, cruising, deceleration everything. Load will determine what your air/fuel ratio should be. I didn't establish a base line for fuel consumption, wasn't really paying attention to it, my problems were rooted in going to a different elevation lake each time and never having the carb adjusted right for any of them. Thats really going to depend on your abilities. Additionally, speed density systems need to be re-tuned every time you make a change to the engine. If you want the best, look no further. Those systems aren't even worth buying, but that's a whole other conversation. A little more than the Holley system, but nobody seems to be anle to make that one work. Tuning is neither required, nor is it recommended. 5.0L 19 lbs./hr onces won't cut it) and mass air meter setup for the new injectors (I used a Pro-M 77mm MAF calibrated with my 24 lbs./hr injectors). 2023 Holley Performance Products, Inc. All Rights Reserved. If you want the answer to that question, we know youll be taking your vehicle to a dyno. While much better than the old methods, due to the significant savings in the amount of time spent tuning these, the simple truth is that it is just a faster method to get to the same old incorrect result. We always know exactly where we need to be in the base fuel and base spark tables because we are constantly monitoring actual ingested air mass and using this to calculate Load. 5.7 Mercruiser EFI Conversion | Boating Forum - iboats.com Cool, I've been hoping you would be back with good news. -The mechanical fuel pump is replaced with a high pressure electric fuel pump. I have done some research on it, and they now offer a "PowerJection III" unit which no longer requires a return line to the tank, and the electronics are completely on the throttle body itself. These days, speed density systems are almost always Self-Learning systems. JavaScript seems to be disabled in your browser. Provide OEM level controls for popular features such as nitrous oxide, water/methanol injection, traction control, 2 step, launch assist, flex fuel, and more. Edelbrock Electronic Fuel Injection - Edelbrock, LLC. The boat is a 1984 Supra inboard ski boat. What is the best aftermarket fuel injection for a 351? By continuing to use our site, you agree to their use. Learn More. Since 2003, CorrectCraftFan.com has been the foremost Correct Craft reference site, and simply provides the best used Correct Craft buying and selling experience anywhere. Converting to fuel injection - CorrectCraftFan.com Forums Lets not get into speed density as it was used in the aftermarket in days past. Closed Loop means the PCM is monitoring a particular engine variable and comparing it to the desired target.

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