2003 TunerCat Calibration Files

[mekkis]

titles as listed

Those 2003 LBY7 tunes are for a 2500 Sierra work truck. I loaded one into a 3500 dually (same ECU and OS) and it worked but popped EGR codes due to no EGR hardware.

Here's the 3500's stock cal, and I ported the 120hp tune over to it as well. Runs and drives great.