Performance Air Intake For Acura RDX (2007-2011) with 2.3L DOHC Turbo Engine RedUpgrade your 2007 2011 Acura RDX's turbocharged 2. 3L engine with a high flow air intake system that delivers noticeable power gains, sharper throttle response, and an aggressive engine noteall while maintaining OEM reliability. Give Your Turbo RDX the Breathing Room It Deserves The first generation Acura RDX broke new ground as Honda's first turbocharged SUV, packing a punchy 2. 3L K23A1 engine that delivered 240 hp in stock form. But like many