i am running a stock gsr throttle body and am looking to upgrade. i am looking for one that has a TPS already on it because i dont like taking the oem one off and having to recalibrate it.

what is a good size to upgrade to? how much to they usually cost ?

 

My ITR one is matched to it from what i can tell .

 

there was a guy in the FI classifieds ofering throttle body boring services. and all yo had to do was send him your TB and he would have it back to you in atbou 2 days . he showed pix and his worked looked really good but now i cant find that post lol. i was thining maybe of going with BBK or a edlebrock TB but i cant find one anywhere...

 

Kauffman does throttle body boring [pretty sure] and he's in Atlanta too man.

 

i was told by a reputable tuner, that the upgrade isn't necessary and you'll be fine w/ the stock TB.. you could probably be better off using the extra money on other parts... unless you can get a killer deal, then go right a head..

 

i agree wiuth your tuner. also with the bored throttle bodies do they put bigger butterflies in? cuz if not and they are overbored its gonna let air in when closed. just something to think about.

 

Actually, I think Kauffman's TB's are stock bore, he just does something with the porting to make them flow better than the STR TB's. I've seen with my own eyes a stock TB and an STR on his flow bench and the stock one outflowing the STR...

 

very true indeed. that is why i have never thought about upgrading TB really much. i always spent money on other power adders lol. ill probabyl just leave mine stock

 

https://honda-tech.com/zerothread?id=771875

 

I was told by the guy that does the boring that the max tb bore on a stock b16/b18c1 throttle body was 63mm if the car will be boosted, 64 if the car is n/a. The throttle body opening on the edelbrock mani is 65mm, so if you want a matched throttle body, I would go with the edelbrock 65mm.