I got a 2003 996 turbo X50 I wanted to know what aftermarket exhaust will give me the most hp and best sound, also I getting upsalute chip. any sugesstions

 

GHL has very nice quality and sounding exhausts.

 

I have at one point sold or install most systems out there. GHL, B&B, Tubi, Europipe, etc. For the 996TT and 997TT's, i have switched to solely Fabspeed, of which i sell a lot. The new generation 3 muffler is the way to go. This is a new dual can setup, similar to the Miltek systems. There is no resonance like the old generation 2 muffler had. Power gains are in the 35hp range, and uses 100 cell cats. No check engine lights either. If you are interested in one, PM me.