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      01-09-2013, 06:29 PM   #7
brusk
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Drives: 2008 135i Coupe
Join Date: Jan 2012
Location: Cleveland, TN

Posts: 526
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I'm no turbo expert but looking at the pics of that vs RB's and others in the recent turbo threads that looks like an upgraded stock sized turbo which already is capable or 400+HP so if that is the case I would consider selling those and buying a tune. Without a tuner to adjust make adjustments you can do all you want to these cars and it will only result in stock like performance at best.
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2008 135i - Cobb AP, MS DP's, Berk street exhaust, AMS IC, BMS DCI, CDV delete, Quaife LSD, M3 control arms, M3 rear SF bushings, SS brake lines.
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