EPA and tuning devices

Diesel trucks that are not equipped with emission controls known as “diesel particulate filters” emit excess particulate matter (PM). When running, trucks without these types of controls leave behind a trail of dark, black smoke.

What a joke. But anyway, time to start building no-smoke high performance engines.

 

Yeah, I know of several folks with pre-emission engines, running some serious HP and torque, that leave less of an exhaust trail than many emission equipped trucks. Sure the DPF cleans up a lot of the black soot, but when they regen, they leave a smelly, smokey trail down the road. I hate it when a truck regens in front of me. That is some nasty stuff.

 

Agreed. Totally nasty stuff.

 

I get a kick out of seeing that belch of black smoke come out of a new truck as it regens....

So much for less particulate matters.