So...
I finally got around to installing my Neuspeed exhaust on my 180TTQ (kinda didn't want to go with the typical Borla/Remus).
here:
http://www.neuspeed.com/products/pro...ails.asp?app=6|TT&type=5<ype=ns_euro&p_id=1171
the power gains that ive felt were mostly toward the lower end of the power band, def. more torque. the sound is pretty faint (well maybe bc i have the VTDA + weather strip, and that **** is pretty loud which kinda over powers the exhaust). the look is great (single tip), the tip has the vent ring finish, which is a pretty nice touch. which you can remotely see here:
Neuspeed's Audi TT Project Car
overall it's a non ricey-sounding exhaust with good performance gains, not to mention the decent price i got it at ($600 brand new, out the door at dtmautohaus). my $.02