Spark Plug Indexing
#4
Thanks for the input. I realize that the HP increase may only be .5 HP, possibly even less. This amount is far less than you can feel driving the car. The Stopwatch might see the tiny added HP though and that is what I am looking for. Perhaps indexing will help efficiency. Read somewhere that the Honda Insight came from the factory with indexed plugs.
Last edited by yovtecjustkickedin; 01-11-2015 at 11:43 AM. Reason: improve grammar
#5
Thanks for the input. I realize that the HP increase may only be .5 HP, possibly even less. This amount is far less than you can feel driving the car. The Stopwatch might see the tiny added HP though and that is what I am looking for. Perhaps indexing will help efficiency. Read somewhere that the Honda Insight came from the factory with indexed plugs.
http://www.insightcentral.net/encyclopedia/ensparkplugs.html
#6
Maybe you saw it here:
InsightCentral.net - Encyclopedia - Honda Insight Iridium Spark Plugs
InsightCentral.net - Encyclopedia - Honda Insight Iridium Spark Plugs
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Oh, you found it. Good for you! You are quite the internet sleuth!
Now I just need to know where the open end of the plug needs to point to..
#8
but I doubt it makes much difference now with current squish type head designs.
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