My Cummins Dodge ain't got no catalytic converter. There, that'll learn ya! Actually, my truck came from the factory with no catalyst. Since then, the muffler and resonators fell off.

My truck only smokes a little. Nothing major. And ONLY when I really try. Which is very very rare. Only when demonstrating my dissatisfaction of another person's lack of driving skill / etiquette. I seriously detest the practice of "rolling coal." There's no need, and makes all diesel trucks look like a problem to be dealt with.

 

Straightpiping it. If only you were like the majority. Don't get me wrong, I do get a chuckle out of seeing videos of a Prius driving 20 under the limit getting smoke bombed by a diesel. It is just around here, I see it almost daily as like I said, no emission testing in these parts.