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The Injen Evolution cold air intake for 2011–2012 GM Duramax 6.6L LML is a engineered drop-in kit that boosts airflow and torque without aftermarket tuning. It features a roto-molded XLPE housing with boost plenum, smooth induction tube, a large SuperNano‑Web dry air filter, stainless hardware and reinforced silicone couplers. No cutting or drilling required; dyno-proven increases up to 30 hp and about 80 ft‑lbs of torque.
Injen 11-12 GMC Duramax LML 6.6L Evolution Intake
