On I just put the sct 3015 tuner on my 04 f250 with the 6.0l, no major mods done to the truck other than egr delete. My question is when programming in the custom tunes what is the best selection for the following settings for the best proformance.
Locked at CT
Lock in 1-2-3
Agg tow haul
Axle ratio
Idle speed
Wot shift
Shift press

 

Do you have custom tunes? I leave my settings the way they are with my GearHead Tunes.

Chuck

 

With the custom tunes it's good to leave the options as default unless instructed by the tune writer.

Josh