when i was at the Performance shop down where i live to put on my cold air Intake, there was this g35 coupe there with injen exaust system. it sounded nice and it was deep tone. but it sound good. if you like it get it.. its not a bad exaust, you should look at the apexi N1 exaust, i hear that is a good exaust as well. i am considering on getting the apexi N1 exaust for my celica. but the injen sounded nice on the g35 coupe. hope that helped you out. peace