Did you install it yourself? If not, how much was the install? Where did you put the "brain" (hide away box)? If you put it under the passenger seat, did you drilled the floor?
I had it installed, since my stock system came with the amplified JBL system that had to be bypassed it was just easier to let the shop deal with it. the "brain" was hidden away under the dash, all in all the install was about $150 and that included the extra labor of having to bypass and rewire the stock system.