GrimmSpeed 2015-2021 Subaru WRX FA20 Stealthbox Air Intake

Inspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake system for the 2015+ WRX. Of course, performance is the highest priority, but at GrimmSpeed so much more than that goes into a product. We wanted an intake that purred quietly under normal driving circumstances but would roar at wide-open throttle. We wanted an intake that looked at home in the well-sported 2015+ WRX engine bay instead of a shoebox stuffed into the fender area. Features Low-profile heat shield protect air filter and MAF sensor Utilizes factory scoop for fresh air supply. Custom performance air filter with built-in velocity stack. High-flow CNC bent and laser-cut aluminum tube. Benefits +32wtq (14.3%) and +21whp (9.6%) Designed in CAD - Perfect mating with the factory turbo and ram-air scoop Low bend angle aluminum tube - Minimize restriction and maximize performance Shielded MAF sensor placement - Protects MAF from heat, which increases the accuracy of readings