Do you think I will need to upgrade my alternator? I have an 2006 Scion xB with a stock battery up front. I have a Kinetik 600 in back and a 3 farad cap. That feeds one sundown 1500. Also have big 3 done.

I am probably going to upgrade wiring again and do two runs of 0 gauge from front to back battery and just do 0 to cap and amp. I am also looking into uprading stock battery to a kinetik also. Should I just do all of this and alternator at same time and say screw it. That way I know I have enough juice if I wanna ever upgrade to a second 1500 and second sub.

you might as well take that cap and toss it with that kind of power its doing more harm than good

That's good cause I wasn't sure if I should put it in or not. Right now its sitting there collecting dust in my storage shed of goodies. And I was just thinking about putting it in and wasn't sure. Currently set up is stock battery, two runs of 4 gauge to back batt. 4 gauge to amp. Yes, I know I need to upgrade that stuff. I am looking right now to buy a 25 foot spool of 0 gauge, maybe 50 if right price. And I just purchased a epic 160 for $45 bucks so thats about to go in, next week.