Has any one installed Pioneer AVIC Z3 in the 2003 4Runner? I just installed mine. Everything works great except Bluetooth system. The volume is just too low for incoming and outgoing calls. I can hardly here any thing and the people on other side cannot here much either. I did have JBL 10 speaker system so I used PAC-Audio wiring system setup with the use of "Tato" model. I have turned up the Bluetooth volume all the way on the new head unit it has made some difference. Now I can here if I am parked. If I am driving with the road noise I cannot here. I have a feeling that the factory amp may n