Originally Posted by BMoney
09's had the P30 option instead of P31. No HP increase.
I know that P30 did not come with the power bump, P30 was the LSD option. But I always thought when owners say "PP" it indicates the P31 option. Maybe OP meant that C63 only had the P30? If that's the case, then sure, that result sounds about right, depending on reaction times, the M3 and non-P31 C63 is about neck and neck in a drag race.