So you haven't had any issues with the battery or any other part of the system with all that extra draw? I want to add my class D 200W amp to power a sub I have, but didn't want to screw with the system at all. And what about the wiring? I read you have to remove the battery for that. I don't want to void any warranties ... Did you have Honda do it or check with them at all? Please give more info. I want to know if I can get a little deep bass back into my life and I can keep the bass turned down on the radio and the quality of sound will go up (i keep it between 0 and 3 anyway) and less stress on those small factory speakers.