Description
***If you are purchasing an exhaust kit and live in Alaska or Hawaii please purchase this shipping here***
4″ and 5″ Downpipe-Back DPF & CAT delete exhaust system.
Vehicle fitment – 2015.6 & 2016 Chevy / GMC Duramax Diesel LML. Silverado and Sierra pickup trucks. Fits extended cab, crew cab & regular cab trucks. 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 – Available in aluminized steel or T-409 stainless steel. Aluminized steel is our most popular but will eventually accumulate surface rust. T-409 stainless steel. Unlike T-304 Stainless its still magnetic. So if your testing to see if you actually got stainless; beware that a magnet will still stick to it. We suggest the stainless upgrade if you regularly operate your truck on salted winter roads. Use drop down menu to make desired selection.
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.
Tuner Required – Removal of the DPF, CAT, SCR, and/or DOC involves removing and eliminating emission related sensors. A DPF delete capable tuner is required to prevent any check engine light or diagnostic trouble codes from setting. If you don’t already have a DPF delete capable tuner we recommend the Ez Lynk Here
If you need multiple exhaust add to cart separatelyÂ
*We carry stainless and aluminized, stainless ships faster. If for some reason aluminized is 2 or more weeks out we have stainless in stock and we will email you if you would like to upgrade and receive it faster.*
**If you can’t wait, need permission from your wife or will be impatient and email us for a status after 2 days, Don’t purchase. These are big boxes and we’re not amazon. You will be charged a CANCELLATION FEE of 15% for any CANCELED orders regardless of the reason.**
Customer Notification and Disclaimer of Liability. This is a race-only product. It is not legal for sale or use on pollution controlled vehicles that are driven on public streets, roads, or highways. Buyer’s use or installation of this product for itself or for Buyer’s customer is at Buyer’s own risk. The Buyer is responsible for obeying federal, state, and local laws. Only Buyer can determine end customer’s use and thus assumes any and all liability hereby waiving any and all claims against Dieselology in the sale of this product to the maximum extent permissible by law. Make sure to abide by all local, state, and federal laws, including emissions, vehicle safety, and traffic laws. It is Buyer’s responsibility to know what those laws are and how they apply to Buyer or Buyer’s customer. This product is designed and intended solely for legally-organized and sanctioned, closed- course, off-road competition use and is not for use on public streets, roads, or highways. This Product is capable of disabling the emissions system on some vehicles. Use on public streets, roads, or highways is a violation of federal and certain state (including California) and local environmental laws
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