Diesel "loudness"?

jfkmk wrote:

From the EPA website:

Defeat devices. It is a violation of the CAA to manufacture, sell, or install a part for a motor vehicle that bypasses, defeats, or renders inoperative any emission control device. For example, computer software that alters diesel fuel injection timing is a defeat device. Defeat devices, which are often sold to enhance engine performance, work by disabling a vehicle's emission controls, causing air pollution. As a result of EPA enforcement, some of the largest manufacturers of defeat devices have agreed to pay penalties and stop the sale of defeat devices.

As for the last part of your arguements, I wholeheartedly agree. The people who believe their "privilege" to modify or defeat an emission control device outweighs someone else's "privilege" or even "right" to breathe clean air is indeed very sad and quite disturbing.

The worst are the sub humans that "roll coal" as they pass a hiker, bicyclist or a vehicle they deem doesn't pollute enough so they spew toxic fumes at them.

The statute in which your statement is derived comes from the subsection referring to manufacturers, dealers, and auto shops. Nothing in there about private party folks. Section 203-a (or "b") or something like that. Pretty much concurrent with most state statutes.

I've lived my entire life without ever seeing anyone intentionally "roll coal" as they pass someone. A few youtube videos doesn't make this a factual common occurrence. I never understand why folks always come back and claim this as being a problem.

Bedlam wrote:
With full disclosure, my feeling is if you can tune an engine to fall withing its emission limits, it should not matter what device you use (following the intent of the law). The Clean Air Act is what has given the EPA power to fine owners and restrict their deleted vehicles.

Emission Standards: https://www.dieselnet.com/standards/

Sale of deleted vehicles: http://www.hardworkingtrucks.com/about-dpf-delete/

Fines for deleted vehicles: http://www.hardworkingtrucks.com/special-report-dpf-deletes/

1 link to standards and 2 links to conjecture. Nothing resolved.

At dispute here is the context of the statement: is it always illegal to modify and/or remove emissions equipment? The original posts which frustrated me are those that claimed folks who modify their trucks are ignorant, arrogant, egotistical, and just plain inconsiderate. There were no passes given...if you modify, you're one of these types of people. What is the point of saying things like this? Why are people so concerned about something so trivial? I hope that I never become someone with such a pessimistic point of view.