I have sec cats replaced with vibrant resonators, cat less DP, and magnaflow mufflers. I thought it would be louder. It's not much louder than stock but the tone is a lot deeper. The tone is perfect I just wish it was louder. I may go with Remus or the 335is mufflers.
New Project....... 2.4L Long Rod motor for my EVO
03 Evo 8 HTA3582r Blown Motor
09 e92 335i MT Sold 440hp/480tq