CM2350 factory file comparrisons...

[Marajin]

If you lived in a country that allows such mods then it is possible to make it more lenient and use less def and such. It has already been done by some top members here more than a few times but it should never be set to mask any real problem. If you have oil or soot or other engine problems causing issue then it will still have issue. You can't make it lenient in ways that ignores clogging components and failing emissions systems because the exhaust is being blocked and that is very bad for motor. Better to fix problems correct instead of trying to band-aid it if the goal is to make problems less.