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      01-17-2013, 10:20 PM   #114
MilehighM3
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Drives: Harrop E90 M3
Join Date: May 2011
Location: Colorado Springs

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2009 E90 M3  [6.50]
The Dinan x pipe is very nice, as is the Akra of course. It depends on what you're after really. Max power without the concern of unburned fuel- Dinan. The Dinan unit has very well built resonators that will eliminate rasp, but is totally catless. The Akra has high quality resonators as well as small 100 cell cats, so the majority of the fuel smell is eliminated. Another option would be to add test pipes to the factory x pipe so that you keep the factory secondary 200 cell cats and basically all smell is eliminated as well as drone and rasp. If you have the MPE, I'm sure you've heard the video clip from EAS of the lime rock with the MS test pipes? I know videos do not do exhaust systems justice, but they are a good starting point.
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