1989 7MGTE Ice Blue Pearl,
Can anybody explain what the Stock ECU does when you have the AFM unplugged? Like what is it doing with fueling and timing and such. Car runs terrible with AFM plugged in and vacuum around -15. unplug it, Idles great, Vacuum and AFRs are good/on the rich side. Plug AFM in it dies/ will not stay running. I have used 3 different AFMs and all end up with the same result.