Cobb 10-13 Mazdaspeed 3 SF Intake SystemIncreased Power The C. A. R. B certified (2010+ pending) COBB Tuning SF Intake removes a pre turbo restriction in the stock intake system, netting +11HP and +16lb ft. gains. The SF Intake intake system utilizes several unique features in an effort to maintain optimal flow for performance while minimizing turbulence that can cause engine management problems. From a custom conical cloth air filter element, a CFD designed velocity stack leads to an