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      02-04-2009, 03:08 PM   #83
dcstep
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Drives: '09 Cpe Silverstone FR 6MT
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2009 M3  [8.40]
Quote:
Originally Posted by ChitownM3 View Post
Actually it seems about right to me. If you look at the results that PG gained by these individual mods, 40whp isn't out of the question.

Generally they're not additive, such that three individual mods that would give you 15 bhp each if done alone will probably add up to 32 bhp rather than 45.

Dave
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