Air Flow Meters – Pros & Cons for Tuners and DIY Programmers

Air Flow Meters – the Pros In the last post I talked about my first attempt at using a mass type Air Flow Meter (AFM) with my Rabbit DIY ECU. Knowing the output curve of the AFM is key because knowing how many grams per second of air are flowing through the engine makes calculating More…

Air Flow Meters – Everything You Need To Know For DIY EFI.

Air Flow Meters DIY The basics Air Flow Meters (AFMs) have been widely used in EFI systems since the 1970’s. The simplest AFMs are basically a hinged flap with a spring return. More air pushing past the flap causes more opening of the flap, and a change in voltage from a potentiometer attached to the More…