Ok, I just bought an MSD coil pack, was going to buy a UDP, but feared for the alternator. My system dims my headlights a little already, and theres 800 watts going to my rears/doors and 1000 mono going to my two 10" subs. I strayed away from that because I don't need my lights to dim any more. I've done some researching but I can't figure out what I should get next. Mostly what i'm doing right now is little purchases, like coil pack here, urethane inserts there, that kind of thing. Could any of you offer me some advice on what to get next? Or offer some help on the UDP? I read around for a few hours on the forums about UDP's, but everyone always had something different to say about them :/

 

with ur alternator.. we have a guys that rebuilds them and can build them for cars that have system.. dk know if u have one aroundu but i get it done for about $35 and it works great with my old system of 2300 watts of power no light dimming after that..add another battery to ur car too will help.

 

and unless your OEM coil pack was toast you just wasted that money. the MSD is just a OEM replacement coil pack painted red.

 

i had 4-12's in my old r/t and was running almost 4000watts on the stock alternator, but i bought an optima battery and never had any problems with the lights dimming...
though a capacitor or 2 will also help