The first thing everyone will ask is, What gauge wire do you have running to your amps?
I have a 4 gauge run going to each amp. I still installed 2 caps the other day. I'm no expert by any means. I just figured that for $80 a piece, what could they hurt? I figured that I probably don't need them most of the time, but they might come in handy when the Batteries start to drain, and they're struggling. Guess we'll see how it goes.