What year of STi?You guys don't make plugs for the STi yet? Do they come in heat ranges colder than stock?
I have a 2006 STi. They all use the same plugs though. It wasn't an option on the menu when you go to select your car, but I believe they are the same plugs the 2.5L WRX's use though.What year of STi?
I know that at least the 2007 which uses our DG1 comes with what it normally an NGK 6 and our plug is a 7. A colder one than that should be coming out at the beginning of next year.