ok im a diesel guy tryin to tune my frist gasser its a 99 chevy 4x4 with a lm7 engine 5.3
the truck has headers, cold air intake, and fast intake. we dont want crazy power but would like some more,and wouldnt mind more bang for the buck at the pump also.

where woudl be a good place to start?
i kinda think the TM would be grate place to start from what i can see i would back it down about 25-30% in the 1st to 2nd and 3rd to 4th shift.
and then head over to the maf and add a little more air flow. after that im lost.
maybe fuel inj. ? any help would be nice but i dont want a hand out i want someone to show me the roops! and point me in the right way. thanks guys