I have a Kia Sportage 2008 EX. I just put PRV door speakers and a Scar audio Ported Box with Kenwood Speaker. First time build. I get great Bass to the point where my side mirrors and the inside of my car shakes. There is a song by Travis Scott called "Don't play" and it doesn't hit hard as I want it. I don't know if its the bass but there is a rumbling in the track that should shake the car but doesn't. What do I have to get to make that type of bass or treble (not sure what it is, you have to listen to the song) shake the car?