Originally Posted by 03gtmustang

Randy, how often should the IAC, PCV, and Fuel filters be changed, (03 GT all bolt ons and cams)? The car has around 19,500 miles. Ill be going in for a new tune sometime before May, so Im thinking about doing a minor tune up before then. Im also thinking about running some of that Seafoam stuff through the car before I install the new parts, any advice? Thanks...