This is a multi-part message in MIME format. -- [ Picked text/plain from multipart/alternative ] When is it advantageous to switch to the RS2 MAF meter? I have to replace my stock one; if Bosch 0 0280 213 017 is an improvement this would be a good time. Thank you. Phil 95.5 w/MTM Stage 2, RS2 EM, Abt exhaust