GFB MACH 2 ATMOSPHERE CONVERSION KIT (SUITS T9103, T9133)
MACH 2 ATMOSPHERE CONVERSION KIT (SUITS T9103 & T9133)
MACH 2 ATMOSPHERE UPGRADE KIT TO CONVERT T9103 & T9133 FROM RECIRCULATING TO ATMOSPHERE VENTING BOV.
CONSISTING OF TRUMPET, SPRING AND PLUG.
The spring used in these kits is harder, as the valve needs to remain closed at idle when venting to atmosphere, this prevents stalling and backfiring.