Loading... Please wait...GFB Response blow off valves use a unique system which allows the amount of air vented to either recirc or atmosphere, to be infinitely varied.
These blow off valves are a direct bolt-on replacement tat requires no modifications to make it work.
T9000 Subaru WRX/STi MY99-00, Forester GT/XT MY98-04, Legacy B4
T9001 Subaru WRX MY08-on, Forester XT MY08-on, Legacy GT MY03-on
T9003 Subaru WRX MY01-07, STi MY02-on, Forester XT MY05-07
Please specify what car you have when ordering.