Quote:

Stamp. or no stamp, those pipes are altered, hence illegal by federal law.



Yes. You are absolutely correct. But I am not talking about Federal EPA standards, only the Denver city ordinance passed this spring. It states that the pipes must be stock and have an EPA stamp on them. My pipes satisfy that law.

That's why I said they satisfy the "letter" of the law, if not the "spirit" of the law.

Here are a couple of links to articles about the new law...

http://cbs4denver.com/seenon/local_story_155214432.html

http://www.roadracingworld.com/news/article/?article=29246

and a snippet talking about the EPA labeling requirement for motorcycle exhaust...

Quote:


On June 4, Denver officials approved changes to the city's vehicle noise ordinance that allow police to issue tickets to riders if their bikes don't have a federal Environmental Protection Agency sound-certification label on the exhaust systems. The new ordinance, which takes effect July 1, would apply to all motorcycles made since 1982, which was the first year that federal law required motorcycles sold in the U.S. to comply with EPA sound regulations.


In practical terms, that means the bike would have to have the original exhaust system installed by the manufacturer. Violators would have two weeks to prove to a judge that they have fixed the problem or would be forced to pay a $500 fine.


Previously, the Denver ordinance required all motor vehicles to pass a sound test that set a limit of 80 decibels at 25 feet. That type of performance standard remains in effect for cars and trucks, except that the allowable limits have been raised. Under the new ordinance, vehicles with a gross weight rating under 10,000 pounds couldn't exceed 82 db(A) at 25 feet, and trucks over 10,000 pounds couldn't exceed 90 db(A) at 50 feet. Only motorcycles would be subject to the EPA sound certification labeling requirement.




And here is a quote from a police officer about how they enforce the law.

Quote:

"It's real simple to enforce. The officer determines that it's louder than what most motorcycles sound like based on their experience and training, they initiate the traffic stop, they inspect the motorcycle pipe. If it doesn't have the EPA stamp, they're in violation," Pelloni said.



The story that came from is here.

http://www.9news.com/news/article.aspx?storyid=73328

So you see; my pipes, while louder than the 80db soecified by the EPA, is in full compliance with the letter of the law in Denver.


He came up and asked, "What are you riding?" I looked at him and said, "Triumph Bonneville America" and he got that 'hellz yeah' look in his eye.