Originally Posted by
foreigneRS
if you go too big on the TB compared to how much air you need at the max in theory you will lose resolution down at the bottom end making it more difficult to get the mapping right at small throttle openings.
bigger is not always better. get the right size for what the engine needs.
That is the reason most throttle bodies of the correct design have non-linear opening as the throttle is operated.
Nothing wrong with the correct throttle body like the RS500 type.
Steve