What plugs do you like???? AND WHY.
I have always used champion AC Autolite I have used the Harley plugs lately. They all seem ok to me.

 

no coments ??

 

I stick with the standard HD version. I know some years, models have ion sensing and some aftermarket plugs can create some problems so thats why I stick with what I know works.

 

I can get away with NGKs in my EVO but as stated above not in my EFI TC due to ion sensitivity and triggering knock retard. In that I run standard Champions and its just fine.