I have a 2005 f150 5.4l 3v. The exhaust is hacked off behind the cats. I had the codes ran.

This was first. With old maf sensor.

This was after a new maf sensor was installed. And yes i reset and cleared the codes.
Any suggestions would very much be appreciated.

 

You have some major issues with the variable cam timing system. There's nothing wrong with the MAF sensor.

 

So i watched a video saying to unplug the vct to see if they are stuck open....i did that and zero change in the way it ran. But something i find odd is i unplugged each injector at a time and all 4 on the drivers side made the truck almost die but the 4 on the passenger side didnt make a change whatsoever in how it ran? Any thoughts?

 

Do you have spark on the passenger side?