Quote Originally Posted by rrutter81
The irridium BKR7EIXs ran like crap (40.00) and carbon coated too quickly so i went with the colder coppers instead. it just happens that they are cheaper, however they wear out quicker. Platinums arent much more but cause KR.
Umm, i think everyone with a forced induction car knows not to run platinums? Why are you talking about them? If your blowing your spark out and your afr is correct you need to either go colder or gap them lower. Use tr6s or equivelant. Why have a car that gets good gas mileage but is slow? If i wanted that i would buy a prius