i dont have the money for a alt yet. i was running 1000 watts on the stock bat with 4 gauge wire. i just got done with putting a redtop optima in the battery tray this morning. im going to upgrade the wires to 0gauge havint gotten a chance to put the subs back in but if i still see the prob. ill consiter getting a stronger alt. by the way do you know how much the stock alt on my car puts out?