Cool..
You can access the emissions codes from the box if yours has the built-in led/sw, but that will just get you CE lamp tripping codes
However , once you make the tool , yo can go into pin 8 and get ignition/fuel HFM managment codes This will be a ggod indicator to whats going on
Then go to pin 14 ..AE/CC ETA codes..
let us know what u find .....