Injen technology continues to lead the way, delivering 'WORLD CLASS PERFORMANCE INTAKES". Injen's patented MR step-down process and Air Fusion come together to give you the first pre-tuned, twin, cold air intakes engineered for your 370Z. Injen is the only "Tuned cold Air Intake System" on the market capable of producing up to 15 h/p and 11ft/lbs. of torque. "The Best of the Best" just got better with the release of the Injen/Amsoil Ea nano-fiber performance dry filters. NO OIL REQUIRED. No more contaminated sensors! Buy from the company that invented and patented the MR step-down process, buy Injen Technology.