Irridium Spark Plugs

[Raptor Charged VX]

hey i am just wondering , how often should we need to change the plugs, and also can the bosch fusion plugs be used. ???

[Raptorsc]

I never changed my Iridiums, don't know that any of my customers ever have either, will do 80 - 100 000km with boost no worries.

Bosch can be used, they as a company don't recommend them for forced induction but I have them in our Supercharged Subaru and I can't seem to fault them.