Detroit 14 Ltr emissions

[2dlb]

Well yesterday we had a triaxle dump stopped and ticketed by the MOE for excessive smoke, the engine is a 2006 EGR Detroit 14 Ltr. The officer said that it would intermittently through a short cuff of smoke. The driver tried to explain that it always does when u change gears. This ticket removes the truck from the road immediately and we can't put it in service until it's corrected. So I spent last night checking fuel,boost pressures,charged the air to air,no leaks, check for fault codes ,none, ran Detroit software file is original, changed air and fuel filters, finally decided to take it to a drive clean test Center and it passes. 13% opacity and the a. Allowable is 30. I have talked to a bunch of good techs I know today and we all feel that this is normal operation for this engine. It's agreed that the advent of dpf eliminates this. Any thoughts, thank you