well i have a switch that stays on when my trucks running and thats hooked up to my fan and iu still noticed a gain iu jus noticed more interferance with my radio it seems like asnd a rougher idle. i plan on getting a better alt if thats possiblr

 

Plenty of other guys run the efans with good luck, so Im sure it will work out fine for you. I havent even looked in to a better alt ..... not sure if there is one.

 

o well im happy with what i got.