I installed the Steeda Pulleys on my 2003 Vert and notice an increase in power. I have not had any charging problems at all. The thing that I like most about the pulleys is that I am now getting 2 mpg more in the city than I used to get. I was really happy about that. Now getting a little over 20 mpg in the city. I think they are well worth it and they will eventually pay for their selves with gas savings. Just my 2 cents.
Rich
Rich