sounds like it could be the cat. convert. is all clogged up
i dont think thats a problem that would come on so suddenly. i would try some other troubleshooting steps before u go ripping ur exhaust apart
werd…thanx for all the advice guys…ill try replacing the fuel filter cuz it should be replaced anyways, im thinking with the turbo spooling and shit its probably making it run super lean. i dunno…well see what happens.
clean the throttle body plate
possibly swap the mass air flow sensor
did the timing belt jump?
fords are well known for bad idle air controllers, try tapping on it while the car is idleing.
Thanx for all the advice guys bit its no longer an issue…see thread
http://www.nyspeed.com/forums/showthread.php?p=149454#post149454
that sucks… but atleast you dont have to worry about it anymore lol