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Old 07-21-2010, 09:23 PM   #37
3rd Gear Member
Join Date: Jul 2009
Location: London
Posts: 447

367 whp for a 328is Stage 2 turbo, lowered compression, stock internal engine. 450 whp will definitely demand a built motor. 400 whp could be in reach but with stock internals I'd question reliability.
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