Hi, I'm new on here but i figure y'all can help me. I have a 1998 cobra with an idle problem. The car only has an off road x pipe and mufflers as a mod but soon after installing the off road x I started having idle problems. At a stop, the idle will drop, sometimes even causing the car to stall and die. I cleaned both the throttle body and the IAC. The car is up to date with all its maintenance and such. Thanks.