Oh you will love it. Did you do your research beforehand, listening to the clips on you tube? If you did religiously like me, I can tell you that it sounds much better in person. But the gains are not that much, but I also suspect that I have a leak after the install, gonna bring it back to my mechanic on Thursday and check it out.

I did, and if money werent an issue, i would be waiting on a Meisterschaft exhaust! I love/hate youtube because it never sounds like it does in the video... so its hard to tell how much you'll love it.

Any performance gains from HKS exhausts without the FIHFC?

Check out my new video on the HKS Hi Power Full Catback Exhaust for the G37 Coupe!
https://www.youtube.com/watch?v=dGAm0FIJyRI

I've been bouncing back and forth between this exhaust and the Ark exhaust but I'm pretty sure I'll be pulling the trigger on the Ark if all goes as planned. Thinking about adding ark hi flow cats as well.