just something for though. Friend works for Utica Truck sales near by and he went out to california to update his certifications for isuzu/duramax all the way up to 2015 and so on. I sent him the thread and he read it over, asked the tech that were teaching the class and they said balance rates are balance rates. But the fuel rate will alter readings, so i guess on both ends of the stick they are both right because most of the guys on here are dealing with tuned trucks and fuel rates will be higher. GM techs are dealing mostly with stock trucks which should have stock fuel rates. Also, even messing with my truck, on my number 5 tune the fuel rate was 18mm3 and when it was not up to operating temp it was around 12mm3. In gear it goes up to 14mm3 when at operating temperature. So if you use the method correctly it does work during specific applications. :thumb:
