Project 3.4 Camaro

It's not my camaro I am having the problems with, but still a general knowledge question, I swapped TBs on my other car, the "new" one is simply a 3400 tb, and I put it on my 3100 engine, only difference in the throttle bodies is size, even went so far as to look up the IAC and TPS part #s and they are the same, but for some reason the car runs like **** and misfires(or sounds like it is) if it all on the 3400 TB but runs just fine with the original 3100 TB. I ran out of daylight, but tomorrow I will swap the sensors out even though I shouldn't have to...
Just doesn't make sense to me that a wonky TPS or IAC could cause the issues it has with that tb on it...

Base91

iTrader: (1)

Are you swapping the TPS and IAC as well?

Project 3.4 Camaro

I am going to, though I shouldn't need to unless they are bad, both TBs use the exact same sensors. And its weird the issues it causes running the 3400 TB, but we'll see what happens with the sensors swapped...