So I am thinking about getting a ITM. It only bolts up to a 66mm ITB. I have a 93 prelude vtec. I want to upgrade both. So what is the stock bore for the ITB? Also if I go with the upgraded ITM would 66m be enough to get the gains I want for the money? Help... I need some advice on ITB and ITB, which and what for the best gains for my $!

 

you're confusing your terms. itb's are individual throttle bodies. you want a single tb.

that being said, what are your mods? if you dont have at least bigger cams and a better flowing header an intake manifold and tb wouldnt be very beneficial.

 

Oh ok... sorry thats what I get for not asking what stands for what. Mods as of now are AEM V2 intake, spoon Header, and Apexi ws2 catback with a hiflow cat. I am planning on getting The gude head package here very soon. It comes with a p&p head, custom racing cams, cam gears, bored throttle body, and bored intake manifold. All for $1,500 plus tax and shipping.
But the reason I was asking was because I was thinking about piecing together my own "head package." Thanks for straightening me out snoopy.