Very happy with the ELM327 v 1.2a performance of the $34 interface. Used it on three different autos any locks right on, and yes I'm pleased. As far as Chinese knock-offs, scanning chips and making dups - thinks that's a stretch. The chip in this device is the ELM chip and even if it's a manufactured part through some other company - so what this is the norm in the semiconductor industry - they simply buy the die designs and fab it themselves. The web site I purchased it from is:
http://motors.search.ebay.com/_W0QQsassZtangxiaorui2000
Dave
