Black 3'' Downpipe Exhaust For 2011-2016 LML 6.6L Duramax Diesel Chevrolet GMC 2500HD 3500HD
---tab Description--- What Does a Downpipe Do? The stock downpipe on your 6.6L LML Duramax creates severe exhaust restriction, causing backpressure, turbo lag and high EGTs. Our 3-inch high-flow catle…
TL;DR: ---tab Description--- What Does a Downpipe Do? The stock downpipe on your 6.6L LML Duramax creates severe exhaust restriction, causing backpressure, turbo lag and high EGTs. Our 3-inch high-flow catless downpipe replaces the restrictive factory unit, optimizing exhaust gas flow, speeding up turbo sp…
