Still have the voltaige isues, But here it is again, I added a second bat did some wiring upgrading changed decks and now it is time to get a bigger alt. The 160 amp just cant hold. But adding the second bat did wonders. Its getting painful now. I need to get a helper to hold the RPM's up so I can crank it. I am using a JLB BPX 2200.1 to power them. Claimed 2450 RMS but they are pertty under rated. My last truck did a 148 outlaw 143 legal and this truck is a couple DB's louder. Its a huge dif. I might see 150 outlaw.