Thread: Exhaust change up: IPE -> Corsa: anyone have any recs/pics on custom tips?
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      07-29-2016, 12:31 AM   #3
617E90M3
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Drives: 2011 E90 M3 DCT
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Wait, So you are trying to say adding HFC's to the iPE axle back netted a 40whp loss? That seems a bit extreme no?
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