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      12-18-2009, 10:01 AM   #11
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Drives: 08 IB E92 M3
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Originally Posted by kugo188 View Post
I have heard that in combination, the 2 systems will result in lack of backpressure, hence, decreased performance。 is this true? is there a solution to this potential problem?
Lack of back pressure is a good thing. If it were bad then why are these things making more hp, i.e. increased performance? An ECU tune, custom for the setup, will make even more gains.


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