S SurboNight Known Member Senior Member Jan 19, 2006 #1 I've heard a rumour (Dunno true or not) that double core spark plugs ie:-Splitfire,NGK CopperCore plugs can make ur pistons "berlubang"cause of the overspark especially if ur car engine is bone stock standard.Is it true:questionmark:
I've heard a rumour (Dunno true or not) that double core spark plugs ie:-Splitfire,NGK CopperCore plugs can make ur pistons "berlubang"cause of the overspark especially if ur car engine is bone stock standard.Is it true:questionmark: