Devils Advocate here...I don't think it will have the effect they write about. I base this on the expensive aftermarket Ignition systems we tested back in the '80s that claimed to provide more power and economy through multiple sparks. The ads touted more efficient flame fronts like this too. Testing them at the dragstrip provided NO gains on stock or modified street engines. No one recorded better fuel economy either. The only positive thing about them was the money it made the manufacturer and the performance shops that sold them.
Spark Plugs
I wonder how these would work in our KIA
carbuzz.com
Hyundai's New Spark Plug Safeguards The Future Of The Combustion Engine
While Hyundai is highly focused on the developing EV market, a radical new spark plug design from the South Korean manufacturer shows that it also wants to extract greater efficiency from the internal combustion engine. According to a patent found by CarBuzz at the US Patent and Trademark Office...
carbuzz.com
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If you look at the patent information you posted in post #5 above it clearly shows 2 separate coil leads - looks like one for the positive spark and one for the secondary negative spark:
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