[Undecayed]

Hello,

I just wanted to see if anyone was running the 3.5" Catback from ATM Speedshop and has some sound clips on their N55. I also wanted to make sure that it does 100% fit e90 xDrive models, and what gains it can make. Their website doesn't mention its weight or performance gains, and the only videos I can find are of N54 guys running it.

Thanks in advance!