The new Grams 72 mm Drive-By-Wire Electronic Throttle Body for Subaru BRZ/FRS is a perfect upgrade for the factory Subaru 65 mm throttle body; delivering a 48% increase in airflow. Each throttle body includes all new components including a CNC machined billet 6061-T6 aluminum housing with a precision-honed oversized bore, a high-torque servo motor, and a proprietary Non-Contact Hall Effect TPS sensor. To ensure the best performance, throttle response, and drivability, each TPS sensor is calibrated to meet the specific requirements of the vehicles engine management system. The Grams electronic throttle body is an ideal solution for both modified and stock engines with increased airflow demands.