[J.Cutta]

Originally Posted by instantkevin

you don't need a better battery... you need a better alternator...

I have 2 amps and a 1-farad capacitor. biggest improvement was made from new alternator (after the old one was overloaded and fell apart, literally). factory alternator pushes 60-75amps. I put in 100amp alternator... wonderfull! bass hit harder, no dimming headlights, no dead battery, nothing. it even charged my capacitor.
now i have a 150amp alternator. i think i can power a small house now.

sidenote: also... if you want good sound in your house too, buy a Onkyo or Harman Kardon stereo/surround reciever because they are both high current recievers (except the <$250 ones). this has the same effect in your home as it does in your car. these recievers deliver better sound at lower wattage ratings compared to most others. Too high of voltage, in car (i.e more than 14volts) or too high wattage in (stereo reciever) can cause excessive heat and damage to other components (i.e blown speakers, failed automotive electrical circuits). In case you're wondering... I sell electronics.

Get alternator, keep battery.

That would have be the first thing I thought but when I brought the car the guy had brought a new alternator plus he had a sound system in the car so I'm figuring he brought a more high power alternator if not I guess I will do something to fix it. I will buy the cap first then see if it still does this. As for the sound system I have it all set up I had time to upgrade. I have two mtx 12's custom box with the MXA6001 amp and for my high's I have a 4 ch Mtx 302 amp. Anything better then that my hatch window will break.