The MSD 6 Series Ignitions feature a capacitive discharge ignition design. The majority of stock ignition systems are inductive ignitions. In an inductive ignition, the coil must store and step up the voltage to maximum strength in between each firing. At higher rpm, since there is less time to charge the coil to full capacity, the voltage falls short of reaching maximum energy which results in a loss of power or top end miss. The MSD Ignition features a capacitor which is quickly charged (within one millisecond) with 460 - 480 volts and stores it until the ignition is triggered. With the CD design, the voltage sent to the coil is always at full power even at high rpm. MULTIPLE SPARKS The MSD 6 Series produces full power multiple sparks for each firing of a plug. The number of multiple sparks that occur decreases as rpm increases, however the spark series always lasts for 20° of crankshaft rotation. Above 3,000 rpm there is simply not enough "time" to fire the spark plug more than once, so there is only one powerful spark.
|Haltech Elite Series Setting|
Ignition Dwell Mode
Constant Duty 50%
The WHITE (points trigger) wire from the MSD is connected directly to Ignition Output 1 on your Haltech ECU. This applies to all Haltech ECU models, past and present.
The above settings are required to emulate a points style ignition that the MSD is looking for.
Do not connect any Haltech wiring directly to the ignition coil when an MSD ignition is being used.
Due to this ignition system operating with multiple spark, when an ignition timing check is being performed it is suggested to bring the engine to greater than 3000rpm for the test. This is to ensure the timing light is not being influenced by multiple sparks.