Originally Posted by BobS
Get the car protuned, you won't regret it and it will feel amazing. I've run all the tunes, nothing compares to a properly protuned Cobb car IMO.
OP seems to love GIAC. GIAC is an off-the-shelf tune designed to fit everyone's car and climate, gas conditions, modifications, etc.
a properly, dyno and street tuned car will devestate any expectations you have for a tune.