Chevy and GMC Duramax Diesel Forum banner

banks is best

  1. Programmers/ Tuners

    Performance Upgrades
    Hi All This is all new to me. Feeling overwhelmed actually :rof First, is there any way to know if my truck has been modified without having a programmer? Second, I know there are a bazillion posts on here about this... opinions on a programmer for a 2001 6.6/Allison. It's my horse hauling...