Perrin - Subaru 15-21 WRX - Charge Pipe (Red) subaru-legacy-2007 The COBB Post MAF Hose

The COBB Post MAF Hose balances form AND function with its smart appearance and turbulence taming characteristics

it was determined that until approximately 3 psi of boost is reached

a Mishimoto billet aluminum oil sandwich plate

10mm ID on the banjo side with an 8mm thickness

Perrin - Subaru 15-21 WRX - Charge Pipe (Red) subaru-legacy-2007 The COBB Post MAF HoseOVERVIEW Replace the restrictive OEM plastic charge pipe to increase horsepower and boost response with the PERRIN Charge Pipe for 2015+ WRX! BETTER AIRFLOW The OEM charge pipe on the FA20 DIT engine is restrictive, narrows down in certain points, and has pleats that make for uneven airflow. The PERRIN Charge Pipe has a perfectly smooth interior, constant radii, and gradual bends, making for much more efficient air delivery. This all combines to