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Originally Posted by MMMM6GC
Still learning about different E9x exhaust options - just curious why the MPE V2 is what you're looking for to replace the Akra Evo? Something to do with how it's installed?
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Yea the mpe v2 was a fix for mpe v1. Mpe is made of inconel which is made very thin which presumably gives the mpe a fairly unique sound from all the steel options out there. Thin means it vibrate a lot and the vibration caused pressure cracks at a very specific location. V2 addressed that with a hole in this area probably to minimize such vibration. My v1 cracked like many ultimately do and caused a high pitch buzz saw sound that is pretty unpleasant.
Akra seemed the highest quality build and is one of the only full titanium ones that saves roughly 46 lbs if you get the full evo kit which is header back. I personally think you can’t possibly beat the akra evo or akra gt4 mid pipe sound but that’s my preference. I never liked loud for the sake of loud.