I have the diablo predator,and can i adjust them and be safe?{LTs and STS} Its like a MAFT it does WOT changes,but not the idel ERR.

Okay lets say iam at + 5LTs Bank 1
+8LTsts Banl 2
Should i take out fuel or add it?

Same example on the STS.

 

When I loaded the canned performance program I
saw trims all negative afterward. I think this
is what you want (slightly rich by default,
closed loop bring it into lean). Did you do
this or are you just messing with variations
to the stock GM tune?

I would add "Power Enrichment", this should
push your trims downward. Realize that the
trims are rolling by, for wherever you are
on the map (one second ago). The Power
Enrichment works below WOT, but I don't
know where it quite or how it acts in the
middle range, only that it has some effect
at part throttle.

But at idle you want lean, cruise you want
lean, because you don't need extra gas to
keep from knocking. Only use what you need,
I would just watch the KR and forget about
the trims. Jack up the advance to the max,
and then give it just enough fuel to keep
from ever seeing KR. At this point I expect
you'll see that you have negative trims where
it counts.