Which GM TBI did you get? As far as I know they all had IAC steppers and if you want to control that I think you have to go with MS2. MS2 also gives you more options for spark control which you may or may not care about.
Id be happy to chat with you (or anyone else) about my MS experience. PM me if it is going to be too much or too far off topic for the board. Better hurry though, mine has been running for over a year now and I have forgot more than I thought.
Id be happy to chat with you (or anyone else) about my MS experience. PM me if it is going to be too much or too far off topic for the board. Better hurry though, mine has been running for over a year now and I have forgot more than I thought.