I don't have the Harmon Kardon system in my car (Nokia Speakers) so I want to upgrade my 95 318i head unit to an after market one because of the lack of bass. I walked into good guys to ask what I had to do to the car in order to change the head unit and they said I have to bypass my stock amp for another $80. I know bypassing the stock amp isn't too hard but is there even an oem amp located somewhere in my car? If they are going to charge me another $80 dollars I might as well do it my self.
After I get the head units I will probably get one sealed 12. I also want to know your opinions on the Nokia speakers hooked up to an after market head unit (does it have more bass then before?, Will I blow them with aftermarket head units?, Is it even worth it to keep them in the car?)