well i have the next level down. i have the T10001bd. Im running a stock alt with a yellow top and a kinetik 600. while driving a see a good voltage but once i stop and at idol it drops and stays at 12. its expected at idol but it never drop below 12.
with the T20001bd i woudl suggest a bigger alt, yellow top and maybe a second yellow top or a bigger kinetik. they draw a LOT of current
i dont wanna sound stupid but what is a kinetik? i have an 05 trailblazer, i plan on doin the yellow top maybe even 2, i have a 5 farad CAP 0gauge wire