So long story short, I had an '06 MZ3 before my MS3(GT). I had a 12" Kicker L5 in my MZ3. My dad now drives it as a DD and we have since taken out the sub. However, I used his car the other day and was very surprised when his speakers sounded much better than mine. I remember when they installed my sub the told me they were going to install a small piece that would make the speakers sound much better. Now I am trying to figure out what it is called, I am thinking it is some sort of power resistor bypass... Could anyone shed some light on this? Could this be done with an MS3 to achieve better sound? Thanks 
