Not really unless you do a lot of WOT driving. It is a big miss conception about throttle bodies. You cannot make the engine grow more CFM than what it already has. Larger T/B are good for drag racing and road tracks that have long straight aways that you can utilize a slightly larger TB that the ECU has been calibrated for.
What you will lose is the low-end throttle response and lower MPG.
Now if you are talking about a throttle body that has been blue printed ported that generally opens them up 1-3 mm there is always a small improvement because now you have reduced the low of CFM via throttle plate hardware and thick throttle shaft and poor design throttle plate. The expense is around 200-300 dollars to perform this service.
Now if better throttle response is really what you want (but can think of any real advantage over a stock TB) then smaller TB would increase the air velocity at lower engine speeds below 2000 rpm and then you would lose your mid and top end speeds.
What you will lose is the low-end throttle response and lower MPG.
Now if you are talking about a throttle body that has been blue printed ported that generally opens them up 1-3 mm there is always a small improvement because now you have reduced the low of CFM via throttle plate hardware and thick throttle shaft and poor design throttle plate. The expense is around 200-300 dollars to perform this service.
Now if better throttle response is really what you want (but can think of any real advantage over a stock TB) then smaller TB would increase the air velocity at lower engine speeds below 2000 rpm and then you would lose your mid and top end speeds.
