Hi Bfhoon,
just replying to your PM here, just in case it helps others.
Keep in mind with this stuff, there is working, and then there is WORKING....
Will xxxx OBDII scanner work with your car ?
The Cheapy ELM327 devices are OBDII compliant.
What this means is that any car that is OBDII compliant (Which includes VT, VX, VY, VZ, VE, VF, 6cyl, V8, supercharged, lpg, manual, auto, ute, wagon, sedan, LWB), as well as 90% of cars manufactured after 2001 (So Ford, Holden, GM, Toyota, Nissan, Mazda........ You get the idea..........)
The problem with the cheapy ELM327 adapters is setting them up to get them to work.
Once they are set up, and with compatible software, they will do basic OBDII diagnostics. (Such as read Engine trouble (P) codes, clear Engine Trouble codes, and obtain basic engine running data).
If you classify this as "working", then yes, the cheapy ELM327 scanners will "work", keeping in mind that you will probably need to mess around with settings, and find software to get them to "work".
For a bit more, you can get something that will also work, the difference is that it will work a bit better. (Eg it will come with free software, you will not need to dick around with baud rates, etc to get it "working"). The other 2 scantools mentioned fall in to this category.
They also support a whole heap of proprietary protocols which although the ELM327 chip can support, the cheapy ELM327 scantools will definitely not support.
Basically with these things, there are lots of applications. (A cheapy ELM327 can scan error codes, just like a Tech2 can scan error codes, however the difference between the two is chalk and cheese).
For more information about setting up a cheapy ELM327 scantool, have a look at this link
www.carmodder.com • OBD Scantool Fun for Beginners for the Holden VE Commodore