I've installed my G2500 in my car, as per instructions. In handsfree mode I get terrible oil can echo. I'm using their speaker and haven't patched it into the car's stereo system. I emailed Seidio and got the standard response of 'did you install it correctly?'. and then no more replies even after I reposted the question to them.
Right now this thing is a very expensive phone cradle.

Any thoughts as to what to do?
Hugh