2011-2015 Duramax LML 5" Downpipe Back Exhaust w/ Muffler (531005)2011 2015 Duramax LML 5" Downpipe Back Exhaust w Muffler (531005) 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

creating a better balance between boost and drive (exhaust backpressure)

This is a brand new Garrett turbine housing for 6

2003-2005 Powerstroke 6

7L Hamilton Cams Competition Springs (07-s-110)

Engineered to withstand intense valvetrain stresses

Nozzles flow at 60 percent over and the injectors have had internal calibration upgrades for added fuel delivery

Stock rod bolts can become a weak link in high-boost

105″ wire) offer enhanced stability for high-performance builds

1999 - 2003 Ford Powerstroke 7

The PPE Race Fuel Valve

5" Downpipe (L5P-EXH-A004)

It was later found to greatly help spool large single turbos