Hello all i paired my carkit to my n900.works all fine but the microphone of the my car radio is very bad so i want to use the phone mic instead. so i modified etc/bluetooth/audio.conf and i added this line:
Disable=Headset

now my n900 sees my carkit as a bluetooth headphone. which is what i wanted . but now when i receive a call it uses the phone speaker and phone mic and not my car speakers.

does any1 know how i can fix this?