Agashi25
Well-known member
5.0 2018+ is 18/23I know a lot of you all are bummed about the 2021 F-150 V8 using cylinder deactivation. The system Chevrolet uses on the Silverado is quoted as having up to a “twelve percent increase” in fuel economy. Depending on many variables, that could get you another two miles per gallon on top on the Ford V8’s approximate 17.
While researching this, I came across this device:
https://www.rangetechnology.com/products/afm-dfm_disabler/parts/RA003B
Apparently it plugs into the trucks OBD II port and works around the cylinder deactivation technology to keep it in V8 mode at all times.
This device is similar to ones I’ve seen that work around that annoying auto start-stop feature. I will probably buy one myself to disable the start-stop of it’s annoying enough.
so 12% shoot if I’m getting 26 on the freeway I’m a happy camper. I am not concerned with city mpg.
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