Quote:
Originally Posted by mattkim85
I am in the exact same situation as well.
So what did you end up going with? full or just rear section?
any noticeable drone?
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Ended up just adding an Eisenmann Race Axel back only. My ears must be shot cause it's not nearly as loud as everyone talks about. My RPI full system on my previous E60 M5 was much more disruptive
. They all drone a little between 1500 and 2000 rpms under load. Still like the idea of the valve, just jumped on a real good deal and haven't looked back.