GDP MPVI4 CHANGE from "Multi-tune" TO "SOTF" or from "SOTF" TO "Multi-tune" or from "Multi-tune/SOTF" TO "Single tune" (17-23 GM Duramax L5P 2500/3500) c_dodge ✔ Increased Horsepower – Improved

✔ Increased Horsepower – Improved exhaust flow lets your Cummins breathe better and run stronger

Better torque handling – Keeps torque transfer stable during acceleration

Backed by GDP’s in-house team

0L engines are expertly crafted to unlock your truck's full potential

Modifications to increase power require swapping the ECM to a 2020-2021 model

GDP MPVI4 CHANGE from "Multi-tune" TO "SOTF" or from "SOTF" TO "Multi-tune" or from "Multi-tune/SOTF" TO "Single tune" (17-23 GM Duramax L5P 2500/3500) c_dodge ✔ Increased Horsepower – ImprovedCHANGE from "Multi tune" TO "SOTF" or from "SOTF" TO "Multi tune" or from "Multi tune SOTF" TO "Single tune" HP Tuners MPVI4 interface (sold separately)