I would check on the rev limiter
If he is up to 8000, that should get him the extra 16 to 18 hp (using the slope of the hp curve).
Is the new rev limit chosen by you the customer or preprogrammed into the chip?
If it can be chosen by you, I would read up on the S54 engine problems in the M3s and maybe think about something a little lower than 8000.
Last edited by scottn2retro; 06-14-2002 at 12:03 AM.