Originally Posted by
J1mbo
Chaffee Have you actually tried them on same spec engines engines? We have, and eyre within a few bhp. theres no restriction, and engines made 690bhp
at the power levels the OP is looking for and much higher there is no restriction by the standard throttle body
But saying that I'm sure somewhere on a rolling road it will make a difference of 10bhp at 450bhp
If
not on a 16v pinto, but on other 16v engines, no power figures to confirm though. Just the way i see it is like this...
You open the throttle more to go faster, so the bigger the throttle body the more power you will get (upto a point that the other mods are then holding it back)