$570.00 for just the Y pipe, damn that seems high!
But if you get more HP without making the car louder that would be a plus.
I'm just use to my Wifes 2007 Solstice GXP. Went to the dealer got a GM performance tune under factory warranty plus had the dealer install it for $750.00. Which made +30hp and +65lbs tq, but thats because the tune raised the boost from 17psi to 21-23psi. It's just real easy to get major HP from turbo charged cars! The Solstice is gone (Should say Totaled) and now I have the 370z which is much nicer car. I just wish I could make that kind of extra power with the 370z without making it really loud, and breaking the bank.