Mel's Manufacturing 5" DPF Back Exhaust System with Tip 07.5-10 GM 6.6L Duramax LMM CU-851840 Many of the hard start

Many of the hard start and rough idle conditions seen on early 7

the application for the Sport varies

This may shorten the life of the driver in the ECM so it's best reserved for competition use

Carli DOES NOT recommend these be installed on an F350

Mel's Manufacturing 5" DPF Back Exhaust System with Tip 07.5-10 GM 6.6L Duramax LMM CU-851840 Many of the hard startFor those who want the look and sound of a full 4" turbo back kit but want to retain the factory Cat and DPF, this is the kit you want. Each kit comes with a Mel's pass through style muffler for increased performance, all required hardware for installation, and a chrome tip for the finishing touch.