Ok i am still looking for the best chip for the OBDII M3. I would like to have many replies to this to get a good feal for the diff chips out. If you have used Dinan, Shark, Unichip, or others; or if you have heard about them, please post here how you thought they proformed. And Please no "Din4n Sux0rs" posts. If you must bash, please back up why you think so. Thanks