Originally Posted by Sh0velMan

Yes, factory H pipe.

The hiss will be there, I did not find it to be bothersome, even when the car was still being street driven regularly. It isn't super loud like with an aftermarket exhaust + LTH.

But that hiss will be basically the only hint to bystanders that there's anything non-stock about the exhaust. That Nismo system is pretty damned quiet while still making very respectable power.