Tuning
Subaru FA20/FA24 Direct Injection (DI)
Documentation and tuning resources for Subaru FA20/FA24 direct injected engines
Ignition Timing & Knock Control
Concepts Ignition For more information on how fuel is delivered, see our documentation page on ...
Fueling & Injection (Open & Closed Loop)
Concepts Air-Fuel Ratio/Lambda Combustion and Air-Fuel Ratio Gasoline engines operate on the p...
Mass Airflow (MAF) & Aftermarket Intakes
Ignition Timing - Primary, Decel, and Startup
For more information on the basics of Ignition Timing and Detonation, see: Ignition Timing and Kn...