Originally Posted by plague
hm. c63 makes 451bhp. that's easily attained by a 335 with a tune and dp's. plus the 335 is down 350lb in weight. hard for me to imagine a much felt power improvement. atleast not while the 335i is running good.... likely due to the power just being delivered differently I suppose.
To my understanding, chipping the c63 unleashes the full 500 hp.
Driving a stock one... Already an Absolute beast. Ridiculous. I think it may take more then a tune/dp only N54 to take it. They really impress me.