Quote:
Originally Posted by mwebb
there will not be spark at both electrodes , the spark will take the single easiest pathway to ground , which may vary as the gap erodes and conditions inside the combustion chamber change .
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Yep. If you really want to have two sparks, use two plugs. Chrysler's Hemis have two plugs per cylinder. If it were really a unicorn then they'd advertise the extra plugs to get some benefit from it. I think that the head design has a lot to do with any gain from it because they don't use it in other engines.
Quote:
Originally Posted by mwebb
never use... they were never OEM specified for any system and do not perform as well as the correct OEM specified part# for the system in question
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That sums it all up nicely. It's always my recommendation with spark plugs.