Hey guys. I switched from iridium to platinum. And now my car is running really bad. Had it tuned on the iridium and then switched. Is it possible that the spark lugs are causing the problems.
Hey guys just got my car tuned and the speedometer off a bit 41 mph=35 , 51=45 80mph=65mph. Just wondering if maybe somebody put gears in the car and what ratio it could be. It's a 99 cobra