I just had my Dinan Exhaust installed last week on my 05 z4 3.0l. It really sounds awesome! At first I really didn't notice a difference when I pulled the car out of the dealership, which I was rather disapointed. There must be some sort of break in period, because the ride home started sounded better and better. It sounds great with the top up, but once you put the top down, it really sounds good. In my opinion it is a little pricey for just an axle back exhaust but having the Dinan name, build quality, and having BMW back it, I think that alone is worth it. As we all know this modding is a serious addiction. Im thinking the Dinan Air Box may be next....
