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      04-18-2009, 07:52 AM   #20
mikewads
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Drives: 2009 M3 Coupe DCT
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The Akrapovic system is also made out of titanium which means its much lighter.

Quote:
Originally Posted by dogears View Post
Because a difference of 4hp measured on different dynos and different cars is insignificant. Plus the Akrapovic has cats and resonators. The RPI doesn't. Therefore, if we are to split hairs, the Akrapovic is clearly superior.

I stand by the comment that any well designed exhaust will net about the same gains. It is not rocket science.
Quote:
Originally Posted by dmerk1978 View Post
the Akrapovic quotes 24hp, and the rpi quotes 28hp, so if the O.P. is looking for straight gains why wouldn't he go with the RPI system...am i missing something?
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