Hi I just bought the AVIC-D3 5 days ago and its giving me radio reception and sub woofer pulse problem. By the way this is what I have installed with my AVIC-D3 2 12 inch Kicker L7's with a Hifonics Brutus amp 1600 watts. So my problem is for some reason my radio reception gets really scratchy when my amp turns on and if I disconnect my amp it goes back to stereo quality radio reception. And my second problem is I always hear some pulse noises come from my subwoofers when my AVIC-D3 is turned on and also when it is turned off. Also when I do have some source turned on my system it does not hit properly so what could be the problem?