Originally Posted by NickTurnon

Stillen makes a really quiet exhaust. I have heard numerous on 370z's and they are all great sounding but too quiet.

If you arent interested in the gains, sell the test pipes, put the stock cats back on and then just run 2.5 inch piping to the rear and add a set of resonators. Youll have the performance gains you want from getting bigger piping, youll have the sound you want from no muffler, and the resonators will help with the drone.

You can probably get $500-700 or whatever for your stillen exhaust, custom exhaust will cost $300 or so if done properly.. More sound, money saved.