09-19-2012, 02:48 AM
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#11 |
 Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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No, you don't need to make any changes to the ignition system because you're running a colder or hotter plug. The thermal transfer characteristics of a plug have little effect on the spark. Why are you running a colder plug? Preignition problems, damaged spark plugs or high EGT?
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