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.
my 335i is running on jb3 map 5, catless dp, intercooler and i still can feel the big difference. Theres no replacement for displacement