aFe Power 46-20162-B BladeRunner GT Intercooler and Tube Outflows stock intercooler up to 20 percent flow & efficiency; +14 HP/+16 lbs. x ft. Torque max gains (vehicle tested with aFe Exhaust System) Multi-directional vane (MDV) technology is used to direct hot airflow through the intercooler core 2-1/2 inches Hot-Side and 3-1/2 inches to 3 inches outlet Cold-Side mandrel-bent powder-coated aluminum and stainless steel tubes Powder-coated wrinkle-black for heat resistance This product is not CARB exempt at this time and is not legal for sale in California or use on vehicles registered with the California Department of Motor Vehicles