I installed a Pioneer head unit in my Nismo with the blue tooth option but I have a challenge using my cell phone. The interior noise in the car is so loud that people that talk to me cannot hear my conversation. I already tried adjusting the "echo" canceling option on the head unit but that didn't work. I've also tried repositioning the mic with very little to no improvement. Anyone out there had any luck resolving it? Has anyone installed sound proofing insulation and does it really work? How difficult is the installation? Help me out guys!
