-
Different Types of Fuel Injection Systems: A Guide
The Short Answer: There are several types of fuel injection systems, but the four main ones are throttle body injection (TBI), multi-point fuel injection (MPFI), sequential fuel injection (SFI), and direct injection. Each one delivers fuel differently, and the right choice depends on your build. For most classic car and hot rod EFI conversions, throttle…
-
What is an ECU and Why Does It Matter?
The Short Answer: An ECU (electronic control unit) is the brain of your EFI system. It reads sensor data in real time and controls fuel injection, ignition timing, and idle speed to keep your engine running right across every operating condition. You hear the term ECU a lot when you start looking into EFI systems,…
-
Common EFI Problems
The Short Answer: Most EFI problems come down to a handful of common causes: clogged or faulty fuel injectors, fuel pressure issues, bad sensor readings, a low voltage or points style ignition system, or worn spark plugs. The fix is usually straightforward once you know where to look. If your EFI system was running fine…
-
EFI Tuning Basics: AFR Targets, Idle Control, Timing, and More
The Short Answer: EFI tuning is the process of setting up and adjusting how your ECU delivers fuel and controls ignition timing across every operating condition. Self-tuning systems like FiTech handle most of this automatically using sensor feedback, but you’re still responsible for the baseline: idle speed, throttle blade position, and cold start setup. If…
-
EFI Fuel System Requirements
The Short Answer: An EFI fuel system needs to deliver fuel at higher pressure and more consistent flow than a carburetor setup. At minimum, you need an electric fuel pump capable of ~58 PSI, EFI-rated fuel lines, a fuel pressure regulator, proper filtration, and a fuel tank that can support the system. If you just…
-
What is an EFI?
The Short Answer: Electronic fuel injection (EFI) is a fuel delivery system that uses sensors, an engine control unit (ECU), and fuel injectors to meter the exact amount of fuel your engine needs at any given moment. EFI systems read real-time data from your engine and adjust the air/fuel ratio automatically. The result is better…
-
FiTech Fuel Injection Q&A | 1 | EP100
Today we’re going to answer your questions we pulled from a few places online. Tech Support Email: te******@*******fi.com Tech Support Line: (951)340-2624 Check in every week for more tips and tricks from the FiTech experts! For more Tech Tuesdays CLICK HERE: https://fitechefi.com/tech-center/ Visit: https://fitechefi.com/ Stay Connected and follow FiTech Fuel Injection: Instagram: / fitech_efi Facebook: / fitechefi …
-
Handheld Features | Tech Tuesdays | EP99
Today we’re going to go over additional features within the FiTech handheld controllers. Tech Support Email: te******@*******fi.com Tech Support Line: (951)340-2624 Have a question you want answered? Comment below and it might be our next Tech Tip! Check in every Tuesday for more tips and tricks from the FiTech experts! For more Tech Tuesdays CLICK…
-
FiTech Go Spark Distributors | Tech Tuesdays | EP98
Today we are going to go over FiTech’s new line of distributors and how they correspond with each EFI System. Check out FiTech Distributors here: https://fitechefi.com/product-categor… Tech Support Email: te******@*******fi.com Tech Support Line: (951)340-2624 Have a question you want answered? Check in every Tuesday for more tips and tricks from the FiTech experts! For more…
-
Swapping Your FiTech ECU | Tech Tuesdays | EP97
FiTech Throttle Body EFI systems feature a new style ECU that has a remote mount relay and fuse block. If you end up with one of these new style ECUs and you’re trying to install it on an existing throttle body we’re going to walk through the steps on how to install that throttle body…
