What is proper spark plug gap with electronic ignition?

[Kevin Trent <trentkc@domain.elided>]

While replacing the water pump on the grey berlina, I've decided to do a 
bit of maintenance including new spark plugs.  I had a set of Champion 
RN9YC on the shelf, and out of the box their gap is approximately 
.030.  Several of my old reference materials specify a plug gap of .025 for 
4 cyl alfas.

However, I seem to recall that if the car has an electronic ignition (like 
the Marelli Plex I use) then the spark plug gap should be larger, like .030.

Question: should there be a larger gap for electronic ignitions versus the 
stock conventional point type ignition?  What is it?  Does it really matter?

Thanks,  //kct 
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