STD IGNITION SERVICE KIT W/ MACE DFI MODULE FOR HOLDEN CALAIS VT.II VX ECOTEC L36 3.8L V6 FROM 07/99The cause of an irregular misfire or a stumble under load may be due to a failed component of the ignition system. This ignition service kit includes everything required to freshen up the ignition system on your Holden Ecotec L36 V6. This ignition service kit comes up with a Mace DFI module that creates a spark strong enough to ignite the air fuel mixture and to control the timing of the spark plugs by opening and closing the ignition coil ground