anyone here had any success or failure with boring out your throttle body? I'm thinking of doing it on my B20a 91 prelude with intake, exhaust, cams, milled head but i've heard mixed ideas. some say it really won't increase hp, just throttle response. some say it will kill the gas mileage.

what do you think?

 

I would like to know too.

 

I would buy a throtle body. Wouldnt recommend try to "bore" it out. Throtle bodys have alot to do with a setup. As far as how much air can get through the intake manifold and mix with the correct amount of fuel