2001-2010 GM Duramax GDP EFILive AutoCal Custom Tuning (GDP480007)

GDPs goal is to give you complete control and Power over your vehicle. They emphasize the fact that innovation Drives Results and that Progress is fed by forward thinking. 

Not only do they produce products that perform extraordinarily, they couple this with a support and technical team that are both motivated by your satisfaction. 

AutoCal is the expert's go-to when tuning the Duramax LB7, LLY, or LBZ. AutoCal is a tool that allows you to electronically crack open the OE ECU & TCM in your Duramax and allows you to overwrite the stock files with upgraded tunes.