hello all. im not much on the car world, and havent done anything to my stang. im a truck guy definently, and know alot about ford trucks prior to 96.
anyways, my stangs throwing a code po411, secondary air injection system incorrect flow. can anyone give me some info on this and what it could be? thanks

 

im no expert, but that sounds like something that would be like the MAF sensor. Check that and see if there is any carbon build up on that. But I wouldnt know if that would be the problem.

 

Filter? idk.. try looking at it.