Quote:

Originally Posted by Needsdecaf FYI, almost all turbo exhausts are minimal power gains, unless accompanied by a tune. Just saying.

My first thought was that BMW is simply telling the truth about the minimal power gains, where aftermarket companies simply lie about the "gains" they get.

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2013 BMW 535i ED-11/23/12 Redelivery- 1/12/13
1978 BMW 320i (paused project)
2009 BMW Z4sdrive35i (ret.)
1995 BMW M3 (ret.)
1987 BMW 325i (ret.)