30 HP Tow Tune:
Focuses on a slight power increase that is safe for your stock 48RE transmisison and a completely altered shift schedule that gets your transmission into lockup in 3rd gear and 4th and holds lockup while coasting in 3rd. Also adjusts the manual second gear lockup point lower… Lockup sooner equals much lower transmission temperatures and more power to the ground.
30 HP MPG Tune:
This tune also has a moderate power increase but focuses on increasing your miles per gallon. Also includes enhanced transmission tuning.
For 2003*, 2004, 2004.5, 2005, 2006, 2007 5.9 Cummins Trucks
*No trans tuning for 2003