Originally Posted by playground
Hitag is good, it works perfect. Can buy a blank remote on ebay and have it programmed to your car. I've done it myself before.
This was on my 323i... haven't tried on the M3.
I've beening try asking those Shenzhen electronic shops to duplicate the keys, they all said it cannot be done without the black box underneath the ignition switch.
How does your Hitag do it?