Just as the title states, is it possible to do an economy based 87 octane tune, I just picked up a 2006 4x4 crew silverado 4.8 3.73 open diff.

I have a nelson tune in my 03, its a 93 octane hot tune, altho i did notice it yeiled a few MPG's and made the tranny much more manageable.

I plan to tow with my new rig but not much around 3k lbs boat trailer combo.
so waking up the 4.8 is a must.

thank you ahead of time.

 

You can have your tuner lower the lean/rich threshold on the O2's, lower the dynamic air flow values in your cruise range, and get more agressive with the DFCO values. Little more timing will also help some.