Duramax LML EGR Delete Guide
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Duramax LML EGR Delete Guide

Aside from the DPF filter and other exhaust-related emissions systems, the Duramax LML also has an EGR system. EGR systems have a few components, most notably the EGR cooler, than are prone to failure. Additionally, it’s bad for engine longevity and restricts performance. For both performance and reliability reasons, deleting the LML’s EGR system is…

Duramax L5P Downpipe Upgrade Guide
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Duramax L5P Downpipe Upgrade Guide

In our 5 Best Duramax L5P Mods guide, we covered downpipes as our favorite exhaust upgrade. While a larger DPF-back exhaust system will provide solid sound gains, the biggest power gains within the exhaust actually come from upgrading the downpipe. Additionally, there are a number of ancillary benefits like lower EGTs and less exhaust backpressure…