If you're deciding on them.....GET 'em. Just got it installed today, and my car is really running great. More growl, and you wouldn't believe the increase in power that I am feeling. I have Flowmaster Super 40's integrated with a MAC Catback. Weird combo I know, but it works for me. My drive to and from work today was outstanding. I was being pushed in the seat when I stepped on the gas.......yeah baby!