02 03 04 05 06 Subaru WRX Turbo Sti Cold Air Intake Red (Included Air Filter) #Cai-sb001r For 2002-2005 Subaru Impreza WRX Model with 2.0L Turbo Engine(Fits Automatic & Manual Transmission) For 2004-2006 Subaru Impreza WRX STi Model with 2.5L Turbo Engine The air intake kit can help your engine to draw more cold air resulting in better throttle response This air intake kit will increase 7-10% of Horsepower and 5-8% of Torque Easy to install and easy to fit with simple tools