ok im getting ready to start work on my throttle bod and have a few questions. 1: are there throttle body spacers available for our cars? 2: how big should i port it? 3: what is the gold screw under the black plastic cap? (thinking jet) 4: is the egr on the throttle body 5: im positive that the answer is yes, but does the intake have to be ported to match? 6: this one is for anybody in oklahoma. who is a good tuner around here and does anyone in ok have a nice conditon cai for cheap
OK...lets see... 1: I have seen them for Evo's...not too sure about base and OZ's 2: I wouldn't go any bigger than the intake manifold opening. If the mani is 58mm, porting the TB 60mm will be useless. I ported my mani to 62mm and swapped for a 3G eclipse V6 TB(61.5mm) 3: No Idea..I would have to look at the service manual 4: Don't think so...think its on the intake mani 5: NO...I could go on forever about intake diameter...simple answer: keep it ABOUT the same size 6: I'm in Alabama....
Well, I did the port before I swapped TB's, so I couldn't tell a huge amount of gains. When I swapped the TB, I noticed a big improvement in throttle response, and the old "butt dyno" seemed to lean towards more low-end power. I'm sure if you did both at the same time, you could tell a difference.... I haven't gotten the Avalanche yet. He's still out of state getting his house and stuff set up. He should be baqck in town in a couple weeks.
I live in the Tulsa area and my buddies brother owns a shop in okc. He does really good work. I can talk to him if ud like me too
