A 2004 Subaru Impreza WRX STI, which is the top of the line Impreza from Subaru.
Subaru Impreza WRX was created in 1992.
Subaru Impreza GT (2009) Subaru Impreza WRX Subaru Impreza WRX STI
The 2015 Subaru WRX has 16 valves.
The base hp of a 2005 Subaru WRX is 227
Subaru Impreza WRX STI was created in 1992.
The 2015 Subaru WRX is a gas-powered vehicle.
The 2015 Subaru WRX has a flat 4 engine.
The 2015 Subaru WRX has a 6-speed manual.
Stick with the BPV (by pass valve as a BOV (blow off valve) will mess up the air/fuel mixture since the WRX's MAF (mass air sensor) is before the turbo. It isn't worth the tuning headaches and would only really work properly if the MAF sensor is moved "after" the turbo/BOV. If you still want a BOV, The Hks unit is one of the more popular, but Tial, Blitz, Greddy, Turbo XS also make good units.
The 2015 Subaru WRX is 15 ft. 0.9 in. (180.9 in.) long.
The 2013 Subaru Impreza-WRX has 16 valves.