I second that! And to top it off the noise that the J's makes is one of the nicest NA induction sounds I've ever heard..
Yes i forgot to mention the gorgeous sound that the j's makes it is just beautiful.......
I had one on my car and when I took it off I cud not believe the power difference all the way through and especially low down and mid end...........
you should try it with cold air, the top end really wakes up especially down low and mid. The other day I put my silencer on my muffler, and seriously, I now realised that more than 50% of the sound was made from the induction. Very bassy and loud!
elv1: Forget about GruppeM, its all hype. The 2 best intakes for your car are Mugen and Js with cold air. If you dont want to spend money, do the Stock Box CAI mod.