I am putting a 1000 watt custom system in my bmw. There will be 2 - Xtant amps, 2- 12inch Eclipse subs, and MB Quart Components. The car has a 90 amp alt. Will i need to get a new one or or should I just go with it and see what happens first. I have been reading a little on here. It seems everyone hates capacitors and that they do nothing to benifit the car except "bling" factor. I was looking a the Power Acoustik capacitors a 5 or a 20 farad. Since every says these won't help, I'm just looking for a little help on what I will need to do.