I really suspect both or one of the catalytic convertors are bad and that’s why I get 11 MPG. I did a temp test and the back one seemed 100F cooler than front. It’s pretty rusted down there. I was thinking maybe I’d take one of them off (if it’s possible) to see if that’s the cause.

What’s infuriating is the 3.7NA engine version gets FREE cat replacement by Ford but the 3.5L ecoboost just gets fucked. I’m not liking Ford as a company so far.