MACH 2 ATMOSPHERE UPGRADE KIT TO CONVERT (T9100,T9101,T9102,T9104,T9105,T9135) FROM RECIRCULATING TO ATMOSPHERE VENTING BOV. CONSISTING OF TRUMPET, SPRING AND PLUG. There is a harder spring supplied in this kit, as the valve needs to remain closed at idle when venting to atmosphere. This prevents stalling and backfiring.
SUBARU IMPREZA 1998 1999 2000 i WRX GC,GC8 2.0 i WRX AWD (GC8) EJ205 1998 - 2000