These Kinugawa dump pipes are superb quality and designed for maximum flow. They feature a show-quality finish and perfect fit incl thread for O2 sensor. This is the twin scroll Subaru fitment (also available in single scroll fitment). Suit VF36 / VF37 etc. Made by Kinugawa Japan. Supplied as shown in the photo.

Link G4 storm Engine Management ECU (plug in)
Link G4 extreme Engine Management ECU (wire in) 