Grimmspeed StealthBox Cold Air Intake BLACK - Subaru 15-21 STI - 060077 814 Series FM1-HDR6 kit features ACT's most

FM1-HDR6 kit features ACT's most popular Heavy Duty pressure plate

7L EcoBoost F-150s use a combined module for engine and transmission control

Quiet operation with increased strength and reliability

delivering a 44% increase in fuel pressure over the factory fuel pump (115 PSI max pressure AEM vs 80 PSI max pressure stock)

Grimmspeed StealthBox Cold Air Intake BLACK - Subaru 15-21 STI - 060077 814 Series FM1-HDR6 kit features ACT's mostInspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake system for the 2015+ WRX. You've been asking for this bad sally for a while and it's finally here. The intake the for the 15+ STI can be thought of as a hybrid of the tube and filter used in the 08 14 WRX intake and the Stealthbox heat shield used in the 2015+ WRX intake. Small design changes were made, but the overall fit and performance is