Originally Posted by brcewane
Talking to my speed shop, who has lots of experience racing, they don't think there will be any substantial gains with increasing this pipe diameter. The smaller diameter fit better under the hood.
i agree but i figured since your doint it all over might want to match the diameter of the throttle body as opposed to having it taper like you do with that silicone coupler. and if you went bigger on that side you would get more cold air im running a 3inch on that side