I have an EFI'd 930 Turbo with a Crane Fireball CDI ignition system.

I'm using new W4CS spark plugs and would like to know what the optimum gap should be for such a system?

I've initially set the gaps to 0.040", but I suspect this may be too large a gap.

I plan to drop the gap down to 0.036" - 0.038" after a week or so to see how it goes.

I've ordered some nice new Jacobs Plug Gapping Pliers so I can set the gaps accurately

Any recommendations?