I'm considering doing the same, adding the e-fan. No one has mentioned the added HP or Fuel Mileage? Does anyone have any good numbers on that?

 

Welcome to the site. Sure removing the clutch fan removes parasitic drag from the engine but so you theoretically get more HP and fuel savings but to actual have factual numbers is impossible without consistent testing in a truck with the same environment or conditions.

Asking me what i get from mine v/s Hammer with his would be different.