2013-2018 Dodge Ram2500/3500 6.7 P1 Race Parts 4" T-BACK Style:No Muffler this is because your Duramax

this is because your Duramax doesn’t come with a factory System like other diesels

OEM Quality - Dual Gerotor:

DIESEL WINTER RESCUE restores the power and flow of fuel to the engine

5-10 Duramax diesels

2013-2018 Dodge Ram2500/3500 6.7 P1 Race Parts 4" T-BACK Style:No Muffler this is because your DuramaxP1 Race Parts 4" Performance Series Turbo back Race Exhaust System Features: No Bungs High Flow Muffler 4" Aluminized Steel OE Style Hangers For Easy Installation Maximum Flow For Competition Applications Race Offroad Disclaimer Customer Notification and Disclaimer of Liability. This is a race only product. It is not legal for sale or use on pollution controlled vehicles that are driven on public streets, roads, or highways. Buyers use or installation