Have a 2014 F-250 with 148k miles nothing upgraded except a new cool side turbo tube. Went to pull a empty 24' lowboy trailer and it was embarrassing with the lack of power. I couldn't hit 70 unless i was going down hill. Climbing hills I was lucky to be going 55 to 60. My trans temps kept climbing too, from 220 to peak of 241. I just got done with changing the trans fluid and filter. I even hit 220 empty. Need advise.