on road/off road plugs?
#2
I want to know this too....like will OS P6 will work good or will the engine perform less?
#3
On road plugs are different/work different that he off road. The housing/the body of the plug are thinner to dissipate the heat faster that the off road. There is more in to it, that is what I remember when I start years ago. Shoot an email to Ron from Werks engines he can tell you exactly, he used to race on road.