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QUOTE(thestumper @ 15 Dec 2009, 11:43 AM)
<{POST_SNAPBACK}>No Idea!
I haven't read the instructions. Have a look here
Click
I have a decat and I just use it to turn my MIL light off. The only other thing I use it for is it tells me temperatures. Other than that I dont really know what it can do. I probably could be getting more use out of it and maybe someone will come along and tell me and you what else it does and how to use it properly.
Aside from the above, there are programmable functions to display a whole suite of information from the car's ECU.
You can have any four of the 25 (or so) values displayed at any one time.
I have RPM, Intake Temperature, Water Temperature, Litres remaining in tank.
However, there are a whole bunch of other stuff I could select at a touch of a button. Such as, fuel pressure, throttle position, miles remaining, bhp currently generated, mph (very accurate), battery voltage, mpg (instant and average), cost per mile, cost per trip etc etc etc.
It also reads DTC codes (although not all error codes), and so will allow you to reset a MIL light.