All I heard was "Man, you gotta do it." So I did it...I forked over 700 bucks (2 programs + K&N filter)...and got ready to feel the boost. Didn't happen...sorry. Okay maybe a slight difference but the lag is still there and I've yet to get pushed back in my seat. I ain't inclined to go chasin more performance with down pipe and cat-back exhaust if this is typical return on investment. Not impressed guys.