Dose anyone know what it's diferences between the Denso IK20 and SK20R11?
I red it on the forum IK20 have a standard gap of 1.1mm and SK20R11 have gap 1.1mm too. According some mates IK20 is better performance, but should be changed at 30,000 miles and SK20R11 be changed at 60,000/100,000.
Now, Which one of this plugs have best properties? Which of this have a good idling, soft drive properties etc...?