Alpha-n
From OpenECU
Alpha-n
Alpha-n is a tuning method that uses engine RPM and throttle angle (TPS) to determine fuel and/or timing values. It is not typically found in any somewhat modern street car due to large disadvantages.
Throttle position constitutes load.
Advantages
Disadvantages
Completely unsuitable for a turbocharged car because throttle position is very indirectly tied to the amount of air traveling through the engine