Originally Posted by NYBladeZ

OP, 5th gear is 1:1 for the m6. I don't know guys, I'm still not sold. In the OP's case you're looking at the cost of the part, the install, and the retune. I'd estimated you're looking at anywhere between $800-$1000 and you're actually losing a few ponies. Granted the loss is up top but it still seems like a a lot for ~12lbs/tq in a limited window of the powerband...