First off I have 99-00 civic si turbo. The car stumbles in low rpm 1st and 2nd gear the car starts to buck. It also has no throttle response sometimes then it kicks in. I just changed tpsb2 days ago and still having the issue. Could it still be tps?

 

I assume you're running a tuned ecu. Is your knock sensor disabled ?

 

I haven't hooked up laptop yet but it should be. I had it tuned by Slowmotion here in Ohio

 

Did you calibrate the TPS or just throw it on ? You should know you need to calibrate it properly to .45 - .50 closed and 4.5 wide open.

 

Yea man in process of re hooking it up. I think my buddy didnt sit the tap In the tb like your suppose to either

 

Ok fixed tps and don't have the bucking problem. But now I'm having problems of with warm startups being 19-20 a/f. I was reading it could maybe be the iat.

Any help would be awesome

Thanks for the info before too.

 

This could be ECT sensor too.