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… Read More


Rabbit DIY ECU – Connecting to Vehicle CAN CAN bus is found in every road vehicle sold in Australia from 2006, along with the OBD2 protocols that have standardised vehicle diagnostics. The OBD2 protocols (also known as SAE J1979) provide a common language used by scan-tools to communicate fault codes and provide information useful for… Read More