LosIsATool
5,000+ posts
CarAudio.com Veteran
Not if you get a good one. My stock put out 60 at idle, my Excessive does 160My ho alternator burnt out on me last week. What they don't tell you is most ho alternators put out less amps than your factory alternator at low rpms so if you do a lot of local driving with a lot of stops it might output worse than your stock alternator. I'd recommend the batteries instead. Unless you do a lot driving that keeps your rpms in the mid 1000s or better.
