The PPE Zilla Carbon Fiber Intake Tube is an excellent performance upgrade for your Duramax engine. It is handcrafted from 100% genuine carbon fiber and finished with a sleek clear coat. Through extensive testing and calibration, PPE has achieved a design that reduces pressure drop by 73% and optimizes airflow, resulting in improved engine performance and turbo efficiency. Replace your restrictive stock intake and experience faster throttle response, noticeable torque gain, and unmatched build quality!