you dont need a bigger T.b.
 

I have 2008 GT. 4.6L 3V. Ive been wanting to upgrade my t.b. from 56mm to 62 twin mm t.b., im having certain people tell me ITS A WASTE OF YOUR $$. Im thinking wtf !.
anybody agree with that. and bt the way, the person telling me this could say,,yeah,you need it, we will get it for you, put it on for you,. they could make money off this potential sale. so,, is this chit true,, no gain from 56 to 62 mm tb. my GT has vortech v3 s trim s/c. 450hp approx.