You can run that just as the factory did, or fairly easily convert to Sequential Point Fuel Injection (SPFI) with what may likely only require a little wiring change to the injectors and the addition of a Camshaft Position Sensor. Maybe you’re working with an early Multi-Port Fuel Injection system that uses a bank-fire or batch-fire approach, firing either all, or multiple, injectors at the same time.
You can use that as is, or you can make a change. Maybe you’re working on a early 1990’s 4.3 Chevy, or small block V8 with a TBI EFI System. If you’re an OEM EFI Takeover-er, you have components in place already that can be reused. TBI aiming for simplicity and/or a somewhat carb-like appearance? Simple Bank or Batch fire MPFI? Or all the way to Sequential Injection? We’ll provide you with the information you need to be able to make an educated decision based on the pros and cons of each system. If you’re a Carb-To-EFIer, you have a clean slate and you get to CHOOSE exactly what sort of system you’ll want to install. No matter which of these two ‘Crews’ you’re a part of, this chapter will help you to understand the different types, or topologies, of Electronic Fuel Injection Control that are available to you. You can be ready to tune in an hour in many cases, with a base map to get you up and running and ready to fine tune for your specific engine and mods! In addition our our ‘we can control anything’ wire in MS3Pro, MicroSquirt, and classic MegaSquirt systems we offer a number of Plug-N-Play Solutions that will meet the needs of many of you, and MAKE IT EASY. But you’re starting from a very different point with less to consider than a carb-to-efi conversion. If you’re going big on power, you might have to make a few upgrades, maybe a bigger fuel pump for example. Sensors, the fuel system, and more can in most cases be re-used. You’ve got many of the pieces in place that you can very likely re-use, depending on your goals. We’ll call you the OEM EFI Takeover Crew. You may CHOOSE to in some cases however, based on your goals for the vehicle and the power you plan to make, but in many cases you can reuse much of what’s already there and just take control of it all. In many cases, you may have no need to fully architect a new EFI system or Ignition system design from what the factory had in place.
#SEQUENTIAL MULTI PORT INJECTION FULL#
In other cases, you’re using an engine you’ve transplanted from another vehicle into your project, be it a classic street rod, a budget car you’re doing some weekend warrior racing in, or a full on max effort race car built with one thing in mind– maximum performance. In some cases, you’re using that engine in the car/truck that it came in from the factory. You’re taking control of an engine that came from the factory with an OEM/Factory Electronic Fuel Injection System already already in place on the engine you’re using in your project.
Some of you will be starting from a foundation. Welcome to those of you in the Factory EFI Takeover Crew! This guide aims to meet both of you where you are at, but it’s fair to call out, you’re starting from very different places! Some of you are converting an engine that was never intended to have EFI on it, from a carb over to EFI. Some of you are taking control of a factory EFI car. What is your starting point– Factory EFI Takeover? Or Carb-to-EFI Conversion?įirst off, let’s discuss the different people and perspectives that you’re approaching this from. Updated September 2022 by Jerry Hoffmann Chapter 4: Electronic Fuel Injection Options – Throttle Body Injection (TBI), MultiPort Fuel Injection (MPFI), Sequential Point Fuel Injection (SPFI), and Direct Injection (DI)
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