I was looking through the zzperformance web site and i was looking at the alternator voltage booster. i was thinking of putting one on my 2004 supercharged 3.8l monte carlo. I was wondering if any one has use one and if they really work and how well.

 

I think spending your money on this is a complete waste (IMO). The alternator is provided between 12.5 volts and 14.5 volts and around 130 amps when charging and is regulated internally depending on vehicles need. If your car is drawing too much power and the alternator can't keep up you either need a alternator that provides more amps or a second battery.