alan412 Posted January 26, 2010 Author Report Share Posted January 26, 2010 A secondary batter in the back will help you with voltage dropping. By adding the second battery you are giving your system two sources to pull from instead of just the battery under the hood which is being used to run the vehicle and all the OEM electrical systems.You will see better performance though by changing out the battery under the hood as well. I am guessing it is probably the OEM battery and will not function as well as a good AGM battery. Another option to help until you get your HO alternator is using the VCM so you can charge at a steady voltage rate. thank you for the advice. that's another thing i forgot to mention, i will be changing the oem battery out up front too. Quote (Headunit) Pioneer DEH-P3100UB (Speakers) Phoenix Gold RSd 65cs (4 Channel) Alpine MRP-F300 (Subs) 2 15" Audioque SDC2.5 (Box) 7.27 cubic feet tuned to 31 Hz (Mono Amplifier) Elemental Designs Nine.1 (Wiring) 1/0 Knukonceptz KLMX (Batteries) 2 C&D Tech 75 a/h Link to comment Share on other sites More sharing options...
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