Perrin Charge Pipe Red WRX (2015-2018) Wheels GrimmSpeed Tumbler to Engine Gaskets

GrimmSpeed Tumbler to Engine Gaskets

" and peak gains of 6 horsepower as measured at the wheels on a Dyno Dynamics dynomometer (reads lower than the common Dynojet)

Pitch Stop Mounts

Specifications:

K&N has seen gains of 12whp on an STI

Perrin Charge Pipe Red WRX (2015-2018) Wheels GrimmSpeed Tumbler to Engine GasketsReplace the restrictive OEM plastic charge pipe and increase airflow and intercooler efficiency with the PERRIN Charge Pipe for 2015 2018 WRX. The oEM charge pipe on the FA20 DIT engine is restrictive, narrows down in certain oints, and has pleats that make uneven airflow. The Perrin charge pipe has a perfectly smooth interior, contast radii, and gradual bens, making for much more efficient air delivery. All of this combined creates for increased