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2003 Evinrude 200hp FICTH thermostat
What are the benefits of changing the original thermostats on the 2003 Evinrude 200hp FICHT motor to the E-Tec thermostats other than plug life?
Didn't know if there were any other benefits with performance?
I will also need to change plugs from QC12PEP to QC10WEP.
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Sprint Boats Moderator
Other than plug life with the 10wep I've not noticed anything different.....The plugs will last more than one season. I'll check them each spring and regap. The 12's I would check and regap twice a year and replace once a year.