Hi Joe
I had exactly the same problem on my S1 2003 Aero8 (no iddle when warm, suction noise, power loss). It appears after a (too?)high RPM on the engine. After a chek with the computer at a BMW garage, they told me to replace the debimeter?(débimètre in french, air flow control system). It works well now.
Last edited by Chrisa8; 02/11/10 12:12 PM.