I have searched but havent found my answer. So, I have an 03 g sedan, when I got it there was power ground remote and rca's ran allready. I bought an amp and a subwoofer, hooked it up.....it has sound, but it is not as deep as It should be. Also it seems as if controlling the sub on my head unit does not work. I think the stock sub is still working as well....kind of drowns out the sound from the door speakers. Any help would be appreciated!! thanks!

 

SHould I disconnect the stock amp and sub?