I have my doubts on improvements of a larger sized intake pipe. First off, the size of the AFM doesn't increase, so you can't really get more air through there. I have also read that the farther away from the intake valve you are, the less the size of the air chambers matter (something to do with air velocity and bursts...I don't fully understand it but a competent guy who understands engines better than me explained it to me). So my question is, why upgrade the intake pipe at all? Does anyone have any dyno sheets which show a power improvement? I can understand getting rid of the stock airbox and replacing that with a cone filter though. And if its all just for looks, then I FULLY understand. Anyways, just thinking out loud.