capacitors are gr8 inventions. but they are primarily used for systems puching upto and over 1000 watts. i do have a friend, however, who put a capacitor on a system with 600 watts on his chevy monte carlo. he had a problem with his light dimming when the system would hit hard. since he put it in, he has had no problems. My system in my CSVT has no problems at all w/o a capacitor and i runn around 750 peak power.it's up to you wether to get one. the people who installed my system said it wouldn't be worth it unless i ran over 1000 watts. our cars don't have the power drain problem like some others. but getting one now will negate the need to get one later if u decide to upgrade ur system.