I use this one: https://www.amazon.com/gp/product/B07JFRFJG6/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
It has a app for my phone that works well with my ranger and my fusion energy. I also have a wired one to work with forscan. With it I can read live data including boost pressure.
she pulled the load really great, at least as good as my 1/2 chevy did. Performance was very good considering the weight, no problem at all getting up to 65 into a 30 mph wind very quickly. I am very happy with it. The load pulled great, no sway even in a very strong cross wind today.
Install was fairly easy, like Jim up above has said the clamps do not have a lot to bite on. the cover came with a piece for the front bulkhead to bring it up to the bed rail level.
Just checking, I use both feet depending on what I'm doing. The problem I had with a hard down shift into low was when I was using my left foot my right foot was touching the gas. I stopped to that and the problem went away.
Trip today:
400 miles
Temps from -18 in the morning to -4 in the afternoon
Winds NW at 15 to 25
Speeds from 70 when I could see to 55 when visibility was not so good.
trip to the west in the morning and east this afternoon.
round trip ave was 18.5 MPG