12 b


   The fact of the matter is all ignitions found on new cars today
   are electronic.  Not just because they have a computer.
   The coils in current use have transistors inside.
   That is electronic.

   They work just like the old coils used with distributors.

   They need a dwell time. In other words to make it simple
   they need a warm up time of several milliseconds.

   This plays hell with the ignition timing.

   Half of the EFI software and EFI microprocessor execution time is taken
   up by handling this problem.

   Now there is a way around this. If you use cap discharge ignition
   system there is no dwell time. The simple coil with out a transistor
   fires with no delay. MSD has been selling them for over 30 years.

   I had a tube version back in 1960.

   So when you talk about electronic ignition you got to be specific.

   Paul Lamar

Electronic Ignition is commonly known as TAI (transistor assisted ignition) versus CDI (capacitor discharge ignition). Lots of both these products in the after market.

Steve Carlisle



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