All you do is push your alt harder and burn it out quicker. it doesnt free up any HP instead it just puts a much larger load on your entire electrical system which in turn.. guess what ! requires power from your motor ! if you have the ability to run a clutch fan its really the best way with a proper shroud. Electric fans are nice and i will be running one but i have the battery to do so (1300+ CCA and 1700 CA's) but if i didnt i wouldnt think about running one due to that fact.