Re: rebuilt oversized throttle body with air foil
I am not 100% sure what he is selling but when they say its a factory overbore then its typically going to be our 48mm twin TB bored to a twin 52.
they use a metal airfoil so that when they bore the TB the airfoil gets bored to the same diameter and they are matched.
Matt Blum used to offer this as a service. I have had 2 of these done and been very happy with them.