Hi guys, I just wanted to know if any of you are using or have used iridium plugs on your turbo sc300's. I have a set of Nippon Denso IK22's which i believe is about 1 step colder than what is normally used on a supra. Do you guys have any feedback on this product? Is it even worth my time to install it? I'm getting the colder one to bring down my combustion chamber temp a bit. I sometimes see my EGT gauge hit about 850 *F ( for very short durations) and I know that this isn't good. Any suggestions? Thanks all.