throttle body sizes which should i chose

[Ryan H]

hey everyone, my car has a( k&n cold air intake , BBk headers and a full exhuast with an offroad x pipe i belive the stock throttle body for a 02 mustang is 63mm (correct me if wrong) but with those mods im getting more air so should i get a 70 mm throttle body 0r a 75 mm throttle body ? anyone have an idea ? because i herd somtimes the bigger one hurts performance?

[Matticus91]

I've heard the same but have heard different explanations as to why. Without doing any research I'd be more inclined to do the 70mm.


˙uoısuǝɯıp ɹǝɥʇouɐ uı ǝuoɥdı ʎɯ ɯoɹɟ ʇuǝs

[GT800]

Do a 70

[Ryan H]

yeah ill probably do that since im not going supercharged right now

[slvrgt]

A 70mm is plenty, 75mm is btr with fi, heads, and really big cams.

[Ryan H]

ok thanks

[areale93]

id do a 70 0r 75 bbk.. i got a 75mm

[Ryan H]

i think im gonna do a 70