In the case of our 2011 Turbos, the difference is unbelievable.
The 2011 CXL Turbo is 220hp / 256tq (I think, stock)
I have not had mine put on a dyno, but I believe the 300whp / 330tq numbers that Vince told me about. All I know is it drives like a totally different car. I believe they advertise gains of 50hp / 60tq. The car will actually take off and the 2nd and 3rd gear pulls are really nice.
This tune added to the time I'll be driving this one. I got the tune after driving it for about a year. I was getting bored with the lack of hard acceleration. I'll drive it for at least three years now (A long time for me in one car

)
Go to
Trifecta Performance Custom Tuning :: Home Page and News and check them out.
-Bryan