GrimmSpeed Cold Air Intake Subaru WRX STI (15-21) Black or Red StealthBox

Fitment Information Subaru WRX STI (2015, 2016, 2017, 2018, 2019, 2020, 2021) INSTALLATION NOTE  Take care to install the air filter onto the intake tube properly. Push the filter onto the tube no more than 1" before tightening the clamp. This will ensure that the velocity stack within the filter is allowed to function properly! Specs & Features +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 Made in the USA - Manufactured right here in Minnesota Hybrid Cold Air/Short Ram Design - Combining the advantages and eliminating the negatives of both traditional intake designs Air straightener - Dimensionally mimics the factory configuration for accurate MAF sensor readings MAF sensor location - Inside heat shield, isolated from engine bay heat Cus