Fuel Mgmt Upgrade

[Patrick_]

Hi,

I bought a boat with the following 2 gauges. I want to upgrade to have fuel management (gph, mpg, ttl)

Besides buying the round speed/fuel mgmt gauge, what other kit do I need?

Also, what is difference between round & square as far as functionality?

The motor is an '11 F250.

[rodbolt17]

sell your existing package.
buy the two gauge square command link.
that will give about all the info you wish as well as an option for water pressure.