I have about a weeks worth of rides to and from work on my 09 GTV with
The newly installed Cosa and LV pipe.
As of now I would have to give a two thumbs up.
The first couple of rides there were some noticeable pops of backfire.
The LV was very smelly and smoked allot.
Today's ride to and from work was like I was riding a whole new scoot.
Very responsive, the sound was great, and it really seemed to have found
(for no better words) a set of balls.
The Corsa being my big concern, seems to be doing its job very well.