found the issue, there is an exhaust leak from where the test pipes meet up with the stock pipes. You can see exhaust "residue" around the collar that holds the 2 pieces together. I am going back to have it fixed on Thursday @ the shop that installed them. Not sure if its a design issue or if the dealer somehow messed it up, but the pipes look a little misaligned. I hope its an easy fix!
E90///M3 : ESS ECU & Shift tuned ~ ESS catback w/ ACM test pipes ~ LUX AE ~ Eibach Prokit (thinking of picking up Ohlins)~ 19" TE37's
Scion xB: modded up and is the DD
Ford Flex Ecoboost: ECU Tuned w/ intake (wifes)