Originally posted by SUPER LAUBO
not really because you can adjust the tension yourself. good idea tho' :thumbup:
I meant more along the lines of if the pulleys are the wrong size, the alternator won't spin as fast as it's supposed to, thus put out less voltage. It's fine at higher engine speeds because of the built in regulator, but at idle, or lower engine speeds, your alt might not put out enough.
Sorry for the confusion.