[Mii]

Originally Posted by T Bone

BMW M engines (except the E36 USA spec M3) uses individual throttle bodies for each cylinder. With this engine, BMW is stating that to have the absolute best throttle response, it is critical the distance between the butterfly and intake is minimal.

This means you cannot have a mass air flow sensor to meter the air, instead it uses the butterfly position, throttle position, idle adjust etc to infer the air volume etc....

Just a fancy way to preserve responsiveness of the M engines....

Right on T Bone