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Old 03-09-2012, 02:40 PM   #25 (permalink)
Fat Charlie
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Join Date: May 2011
Location: Route 16
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Al the Third, year four - '13 Honda Fit Base
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Quote:
Originally Posted by mwebb View Post
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 .
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 View Post
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
That sums it all up nicely. It's always my recommendation with spark plugs.
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Quote:
Originally Posted by sheepdog44 View Post
Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

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