so i have a 2002 gmc sierra with a 4.3 5spd. iv tuned it a few times doing a few different things i found online. last time i revisited my maf and ve i tuned off dynamic air flow and gave that a shot. that caused some pretty big changes to both maf and ve tables. i made adjustments and then turned everything back on that i had turned off.

before this last adjustments i had great power but a lot of negative fuel trims. after this last adjustments i have great fuel trims but not as good of power.

im just curious if there is a way to get good power without negative fuel trims?