...and they're trying to do it because too many of us are trying to make an end run around the law. Almost all of the GMT400 trucks I've seen in the salvage yard were straight-piped, and if most people are violating the law, we can expect a crackdown. We have a responsibility to follow the law.The EPA is trying to make it illegal to remove emissions equipment from racing cars 'n' trucks. They haven't gotten there yet, but they're trying. The RPM Act would fix that, but it's been stalled in Congress for years.