Lost

[JWBFX4]

Originally Posted by tadams11201

It is not throwing any codes ande being as it runs like it should stock WITH the performance setting, I would assume that it isn't a misfire. Please help.. cannot find anything on the web related to this. 2005 f150 5.4l

I might just be having an off morning but what does stock with performance settings mean??

All the things I had thought of looks like its been done....cats, O2's....Dont really know what else to suggest.