Quote:
Originally Posted by Dinan_Engineering
Straight pipes are typically marginally louder and more "raw/rowdy" for lack of a better term whereas an X smooths out the flow and produces a more refined consistent sound. Really a matter of personal taste of what kind of sound is more your style. Being an M5 we simply opted for what we thought the majority of the crowd would prefer in the X with the vehicle being more synonymous with a "gentleman's car".
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Need more videos to show case your product. The videos online are all over the place, the listed video under Dinan's youtube page is a mix with their cat back also under a overpass/bridge or something which seems misleading. Personally I'd think your x mid pipe would flow the best but may kill some of the rumbly sound some may want. Regardless would be cool to hear a before and after of the same car. Some of the reviews on this thread are mixed regarding liking the sound or not.