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.
