FiTech EFI system

Takes a while to learn and you still need to adjust it plenty.

Check the "dashboard", your IAC count should be 5-15 at warm idle. With the key off, adjust the idle screw to be plenty open, fire it up and then slowly close the idle screw until the IAC count falls in that range.

The rest is a matter of driving and tuning. Go to their tech page and download the definitions pdf. To get a good idle, I reduced my idle fuel learning to less than 10 after giving it a few minutes to learn the trim.