kinetik hc2000 and stock 130 amp alt

This is probably your BEST reason to go with the dual batt solution - you best believe that you fry your ECU (I dunno how you would, just that if u did. . .) your uber-expensive Carmax warranty won't point the finger back @ u . . .

But for real answers here, you'd need to read your warranty - and even then it will probably devolve to language like "if an aftermarket upgrade is determined to be the cause of the failure, then the indemnity company is not responsible for payment. . . " - and that YOU get to pay for arbitration (at $400/hr), another mechanics opinion(at $80/hr), etc.

Well - you would need to evalute the arguments posted and make a decision. . . I know what *I* would do. . .

Correct.  This prevents one with a lower ESR draining off the other everytime you turn your car off.

I *seriously* doubt it. 

In the final analysis, even with 3000watts rms, this doesn't really represent what your constant pull will be - music is dynamic and it'd take some seriously aggressive use to approach the - I dunno - 3000watts*1.5(to account for amp inefficiency)/12.5=~360amps ... but this would be pink noise @ full tilt boogie output - or a rather unrealistic measure of ur requirements.

So figure maybe ~150~200 amps, if ur aggressive- with 130 amps backed up by the MASSIVE  reserves of paralleled kinetik batteries - should be more than enough to handle this with few side effects.  But this is my judgement -

I think, given your warranty situation, electrical requirements, etc.,  paralled batteries is probably your best place to *begin* at anyrate. . .