Shared L29(454) tunes

[skills4lou]

I have the black box. For what I use this truck for I'm not ready to upgrade.

[kwbudaman]

I am in a similar situation. Had the truck since new, and want to get back the mpg that was lost when the 10% ethanol blend came into play by bumping up the base timing and leaning out the cruise afr. Have you been able to do any of that, or are you tweaking other things?