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2005 Chevrolet 6.6L Duramax LLY
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Description
If you're looking to upgrade the exhaust system on your 3rd Generation EcoDiesel, you've come to the right place! But first, lets take a look at the components of your current system to give you a better understanding of how it all works. First of all, teh factory system consists of a 3" diameter construction that starts at your turbo. Working back from there, you'll find an oxidation catalyst that assists in the emissions control processes. Just beyond this catalyst you'll see where the urea (Diesel Exhaust Fluid / DEF) is injected, followed by the Diesel Particulate Filter (DPF). The DPF is basically a soot trap to contain these particulates that weren't burnt by the engine to produce power. The engine will superheat the DPF using a process known as a regeneration cycle (also known as a "regen") to burn off this particulate matter at certain intervals. Behind the DPF, you'll find a muffler and a resonator to reduce in-cab and external exhaust decibals.

This system is very similar to the previous generation of EcoDiesels with a couple of changes. First, as part of a new EGR (Exhaust Gas Recirculation) System, exhaust gases post-DPF are cycled back into the low pressure side of the EGR to aid in reducing carbon bulidup of the EGR and intake system. As an extra bonus, its at least claimed this helps to improve turbocharger performance. The second big difference is a larger Selective Catalytic Reduction (SCR) that incorporates a new diesel oxidation catalyst with the DPF to further reduce NOx.

Based upon this information, can an exhaust system really make that big of a difference in performance? Absolutely! We offer numerous options to equip your EcoDiesel for more power, better sound, and just a plain better looking exhaust system. Do you want the cool look of duals? No problem! Or maybe you're just after more performance, but don't care about the look, we've got that too! Many exhaust systems are available in an aluminized steel, T409 stainless steel, and even T304 stainless steel. Base kits and what most factory exhaust systems are constructed of aluminized steel. Aluminized steel should not be confused with just aluminum, as that is not what the material is. Rather, this type of steel has been hot-dip coated on both sides with an alloy that aids in reducing corrosion of the steel material. In most environments, aluminized steel is the material of choice for an exhaust system and is the most budget-friendly, as well.

As always, if you have any questions about which type of exhaust kit is right for you, do not hesitate to give us a call or shoot an e-mail to cs@dieselpowerproducts.com and we will be happy to answer your questions!