here's a quick video of my car with catless-resonated AA tuning exhaust. Enjoy

http://www.youtube.com/watch?v=kVKJ_gGYlkk

Also, some of my friends cars..
335i with HPF
http://www.youtube.com/watch?v=DqBLzg-l7Ic

335i wthi HPF catless

http://www.youtube.com/watch?v=YwOJ7EZHoRU

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