Agency Power Equal Length Header WRX (2002-2014) STI (2004-2018) Legacy GT Suspension (10-up) The Grimmspeed unit is larger

Agency Power Equal Length Header WRX (2002-2014) STI (2004-2018) Legacy GT Suspension (10-up) The Grimmspeed unit is largerMany Subaru WRX STI LGT owners want their turbo cars to spool up quicker and still deliver great horsepower and torque gains. With the new Agency Power equal length header this is absolutely possible. By implementing equal length tubing and a merged collector, Agency Power is able to improve your turbo spool up by 300rpm. When testing this on header on an upgraded turbo vehicle, AP were able to see gains on a Mustang Dyno of up to 30ft lbs of torque

SKU: 86749265104 · From webdevsolutions.tech