4″ DPF & CAT delete pipe.

Vehicle fitment – 2015.5 & 2016 Chevy / GMC Duramax Diesel LML. Silverado and Sierra pickup trucks. Crew cab short bed & crew cab long bed. This will not fit the 3500/4500/5500 Cab & Chassis commercial style truck.

2015 or 2015.5? – 2015 is a split year. The 2011-2015 downpipe is secured to the turbo-direct pipe using a V-band style clamp. The 2015.5-2016 uses a 3 bolt flange style connection. Be sure to visually verify the clamp style your truck is equipped with.

Exhaust Material – Made from T409 stainless steel. A common misconception; unlike T304 stainless, T409 stainless is still magnetic. So if your testing to see if you actually got stainless; beware that a magnet will still stick to it.

Installation – Install takes approx. 1hr with basic hand tools done on the ground of your driveway or garage. Quicker if you have automotive style lift. Cutting may be be required to fit shorter wheelbase bed/cab configurations. Clamps, hangers and hardware are included. You may have to re-use some factory hardware.

Fuel Mileage – Expect to see a significant increase in fuel mileage. If your DPF is plugged up your probably averaging about 13-14 mpg. More or less depending on the severity of the restriction. After deleting the DPF/CAT expect to get a combined mileage of 18-19 mpg. Larger tires and poor driving habits will skew mileage downward.

Installation Instructions
P1 Race Parts – CGMAL429
Flo Pro – 872