Were you able to retain your trip computer and clock? (AVG MPG, Miles left until empty, etc.) If so, PLEASE tell me how you did it, I have a 2009 Mazda3 and I havn't installed an aftermarket unit yet because AFAIK, my lcd display will remain blank other than the A/C control portion. Please let me know how you were able to retain the functions, if you were able to do so. Thanks!
-Sean