Ive done a few setups before and have never had to much of a problem with engine noise. Ive just completed a multi amp setup in my car with a small amp to power my cdt components up front and a big tsunami amp for my brahmas in the back. Well i havent pluged the rcas to that will go to the tsunami in yet mainly because i wanted to tweet the speakers first.
Well anyways, i start up my car with everything hooked up and i move the volume nob to 1, and i get a huge amount of engine noise coming from the cdts (brahmas arent hooked up yet), not a little in the background but there is more engine noise than music until my volume is past half way, and i have my gains set right. When the car is off its very nice to listen to but there is still some light static barely audible in the background. I have stinger rca cables going to the back, and my ground goes to the ground terminal on the yellow top in the back (i have two batteries in the car) and then theres another ground wire running from that ground terminal to what i think is the chasis, or some type of very hard metal under the car. That ground cable is right above the exhaust, might that be the reason there is SO MUCH engine noise? Or is it maybe because my power wire and rcas cross each other once? But keep in mind that this isnt just your normal amound of engine noise, its a huge amount that drowns out every other sound around it. I also still get that annoying thump every time i change tracks.