hi guys, my dilema is that no matter what I do or how I wire / re-wire my system i still get engine noise. I've used various RCA's you name it, it doesnt go away.

I was thinking of wiring my radio back to my aftermarket interior speakers and just using the SUB RCA out for my SUB.
Hence, eliminating the engine noise but, will it sound significantally different?
I dont blast the radio or drive down the street hoping to set off car alarms.