2017-2023 L5P Duramax 6.6L AMDP HP Tuners Full 4" Bundle serial-required Quieter than Basic Mufflers

Quieter than Basic Mufflers

61% Airflow Increase Over Stock Intake

4" Full Exhaust Fitment & Features

5-Ply Polyester Reinforced Silicone Material Made to Withstand High Temperatures & High Pressure

2017-2023 L5P Duramax 6.6L AMDP HP Tuners Full 4" Bundle serial-required Quieter than Basic Mufflers** DO NOT DELETE YOUR VEHICLE UNTIL TUNING HAS BEEN PERFORMED AND TESTED ** Bundle Includes All HP Credits Required For Licensing & Tune Flashing REQUIRES AN HP TUNERS MPVI3 OR NEWER DEVICE, UNLOCK TOOL (ONLY NEEDED FOR 17 & EARLY 18 TRUCKS) AND HP CREDITS TO INSTALL TUNING IF ORDERING THE DEVICE, PLEASE EMAIL YOUR STOCK READ s WHEN YOU RECEIVE YOUR DEVICE AN UNLOCKED TCM AND TCM TUNING IS REQUIRED FOR 100HP, 150HP & SOTF OPTIONS. PLEASE ADD ANY MODS