Shorttrackthing
Member
So im buying new spark plugs, and obviously I know they probably don't make resistor Autolite 3910X racing spark plugs but I have a Stock Predator 212cc engine and we use Autolite Racing 3910X spark plugs because its a racing engine for racing purposes thats why I dont use NGK BRE6S spark plugs because if that Predator was on a generator i would, but otherwise its for racing purposes so i use racing plugs, what do recommend non resistor or resistor