[TurboBob]

replied to your AIM, this is what I posted (I have said all this before BTW)

TurboBobBailey: yo, just got back to work here.
TurboBobBailey: trims (in the ECU) are what the ECU is doing to maintain 14.7:1
TurboBobBailey: so if the trim is 80, that means the ECU is removing fuel to maintain 14.7
TurboBobBailey: note, the trims in a 1G are exaggerated, a trim of 80 is only about 5% correction in the ECU. (based on my research)
TurboBobBailey: to make a trim of 80 go back to 100, remove about 5% in the Pro (-5%).
TurboBobBailey: these both said, I am now tuning for trims of 81. The car runs fine, and the tuning is easier. If the trims are pinned at 81, then you only have to watch the O2 trim.
TurboBobBailey: The O2 trim is the key to driveability as well. Spend some time watching what it does, especially if the main trims are pinned low. Then the operation is very clear.
TurboBobBailey: I tune for main trims pinned at 81, and the O2 trim 80 - 90.
TurboBobBailey: catch you later.
TurboBobBailey: B