Killer B Motorsport 4-1 Holy Header - Subaru Models (inc. 2002-2014 WRX / 2004-2021 STI) Subaru-Forester-2012 2 for motor control and

2 for motor control and 3 for the onboard position sensor

weighing approximately 30% less than traditional plastic mats

Engine aspiration = turbocharged

THIS KIT INCLUDES:

Killer B Motorsport 4-1 Holy Header - Subaru Models (inc. 2002-2014 WRX / 2004-2021 STI) Subaru-Forester-2012 2 for motor control andSymmetrical 4 1 design maintains high and consistent exhaust velocity as RPMs rise. You can expect faster spool up time compared to long primary double secondary designs. A difference you will immediately notice in throttle response and the ability to hold more power higher into the revs. NOTE: This version is not ceramic coated. Please check the related products section below for the coated version. The Killer B Motorsport Holy Header was developed