Purchased the Supersprint race exhaust which includes the resonator delete option (a new x-pipe between the cats and the mufflers with no resonator). My sole purpose was to have a better sounding car - one that actually sounds like a sports car! I don't need a few more HP - 330 is enough for me. I know sound is objective but I wanted a deeper tone but not too loud and certainly not raspy or with any droning. I consulted with the Supersprint dealer and was told that the sport mufflers would be too much like stock and this is what I should buy.
Installation was a pleasure. Everything fit perfectly. Unlike what I read here in another post, mine were well made with nice even welds. I didn't realize how ugly the OEM mufflers were until I gazed at the back of my car when I was finished and saw these little oval beauties.
But then I started it up. Again I say, sound level is an objective thing. One person's "too loud" is another's "not loud enough". But to me it was really too raspy and loud under acceleration. I'm not a kid and I really hate the sound of those Subarus and Hondas driving around with those "mufflers" with the 5 inch diameter tips - and this setup sounded a bit like that. Normal acceleration from a standing start was way louder than I expected with droning from 2 - 3K. Second or third gear with half or more acceleration would get anyones attention within 500 yards. Foot off the pedal and it got very quiet like you turned off a switch. It just was not what I expected and I was very disappointed.
I called Supersprint and told them my story. They did not agree with the dealer's description of what the sound levels would be. They said the sport mufflers are louder than stock and the race mufflers are even louder. I asked if it would make much of a difference if I put the OEM x-pipe back because of the resonator. They said yes, it would help.
Well it more than "helped". I am now a VERY happy Z4 M owner. The sound is perfect for me. Still loud enough but much deeper - no raspy sound at all. Not as blaring when accelerating but also louder than before when decelerating so the sound is much more even. And all droning is gone. And the dealer agreed to take the x-pipe back and refund my money. He said they can't keep these systems on the shelf so he would have no trouble selling it. Still very generous of them. So I though my experience would possibly help anyone who is considering a Supersprint purchase.
Installation was a pleasure. Everything fit perfectly. Unlike what I read here in another post, mine were well made with nice even welds. I didn't realize how ugly the OEM mufflers were until I gazed at the back of my car when I was finished and saw these little oval beauties.
But then I started it up. Again I say, sound level is an objective thing. One person's "too loud" is another's "not loud enough". But to me it was really too raspy and loud under acceleration. I'm not a kid and I really hate the sound of those Subarus and Hondas driving around with those "mufflers" with the 5 inch diameter tips - and this setup sounded a bit like that. Normal acceleration from a standing start was way louder than I expected with droning from 2 - 3K. Second or third gear with half or more acceleration would get anyones attention within 500 yards. Foot off the pedal and it got very quiet like you turned off a switch. It just was not what I expected and I was very disappointed.
I called Supersprint and told them my story. They did not agree with the dealer's description of what the sound levels would be. They said the sport mufflers are louder than stock and the race mufflers are even louder. I asked if it would make much of a difference if I put the OEM x-pipe back because of the resonator. They said yes, it would help.
Well it more than "helped". I am now a VERY happy Z4 M owner. The sound is perfect for me. Still loud enough but much deeper - no raspy sound at all. Not as blaring when accelerating but also louder than before when decelerating so the sound is much more even. And all droning is gone. And the dealer agreed to take the x-pipe back and refund my money. He said they can't keep these systems on the shelf so he would have no trouble selling it. Still very generous of them. So I though my experience would possibly help anyone who is considering a Supersprint purchase.
