Tycoon

has anyone done this mod to his/her IS yet?
Does anyone know how many we need for IS?
Will there be any warranty problem?

Thanks.

EmoDragRacer

why are you gonna swap out spark plugs... I am pretty sure they come with iridium plugs anyway... you would just be replacing very very good plugs with the same plugs or worse...?

gte

this is not considered a mod, and will not do anything for your IS unless you factory plugs are insufficient for some reason (ie: forced induction)





the fact that you are asking how many spark plugs our cars have leads me to believe that you are new to cars, as almost all cars have 1 plug per cylinder, which would total 6 or the IS, i would suggest taking your car to a shop and asking their advice on how to make your car faster, then paying them to follow through.