cyn
10+ year member
CarAudio.com Elite
If you can't keep the battery charged will running the amp.. you can't charge the battery charge a cap and run the amp either.. so no a cap is not a good thing. get a better battery, do the big 3 upgrade, make sure the ohm load is correct with the amp, upgrade your alt. if you have to and if you do upgrade go no lower than 140amps no since in upgrading 15-20amps on an alternator.. but for the price you can just get a 220 amp or something like that..
