C100 OBDII/EOBD code reader
Not only will it show the code number it will also give a description of the fault and let you clear the code ( if the fault is still present the code will re-show again)
Some cars it will also show the water temp, oil temp, speed, revs, and so on. on my 2002 bug eye wrx it shows most of these.
If you like i can plug mine into your car and you can see if it works and how it works before buying one, Are you currently running ECUTEK or you are just looking into getting it, as i don't know the compatibility with ECUTEK.
The site you linked to with the green+black plugs are for the older subaru's that didn't have a OBDII port ( you do have a OBDII port under the steering wheel ?? )
