2011-2015 Duramax LML 4" Car & DPF Race Pipe w/ Muffler (431029)2011 2015 Duramax LML 4" Car & DPF Race Pipe w Muffler (431029) Constructed out of 16 gauge aluminized steel or T409 Stainless, this exhaust system is designed to simplify installation with included clamps, preweld contour bends and improved flanges. Enjoy a noticeable boost in performance, lowered EGTs and amplified air flow with this Mel's system. For powerhouse performance, Mel's delivers horsepower you can hear! IMPORTANT NOTE: The turbo direct

EXHAUST BRAKES:  We get asked a lot about exhaust brakes and if they work with our turbos

D-701-20 116120910 116120204 2002-2004 CA E

The intake/exhaust valve

Constructed out of 16 gauge aluminized steel or T409 Stainless

178/208 Camshaft (fits 89-2018 Cummins)

This improved balance under heavy load means more efficiency and power at a given boost number

7 Hemi engines

From stock to 700+ hp ground pounders

For this reason we highly recommend replacing your injector lines while changing injectors if the lines have not been changed within the last 40

innovation

025″ piston protrusion and at least

lower EGTs and improved flow