Anybody looked into larger diameter TBs for the ges? I was maybe thinking of seeing what they look like...I havent seen the underside of my hood but like twice sicne I've bought the car(only a week, so dont freak), so I'm thinking I gotta see what I'm looking at first...opinions on this???

 

a few of the racing teams did some experimentation with larger throttle bodies...and got NEGLIGIBLE increase...in fact...the one one we have did the best for them.

 

I just ported and polished the stock one. I coned the inner bore, knife edged the butterfly plate, removed half of the bar that holds the plate on(left the side with the threaded holes), counter sunk the screws, by-passed the coolant, and added the phenolic spacer. I noticed quite an increase in throttle response especially, and a greater increase at higher rpm when the secondaries open.
Tomorrow I am going to pull the intake manifold and do the same thing, along with the spacer and the j-spec intake cam. All together should be very complimentary. The spacers, along with a colder intake charge and more velocity should make up for the loss in low end torque from the cam. We will see.

 

pure pro what kind of tool did you use to do the port and polish???

 

I used a die grinder for the big stuff and a dremel for the small stuff. I have done this to dozens of them, and have gotten nothing but good responses from everyone. It is cheap and effective in my book.

 

We have experimented with P&P throttle bodies and larger diameter throttle bodies (in Ford Foci)....no real HP 'gains' but throttle response is much better.