Bandit,
Yes — it has been against Federal law to tamper with any vehicle since the late 60s and 70s! However, only states with auto smog inspections enforce the tampering provision. And, since there are no smog inspections for motorcycles anywhere in the U.S., there is little, or NO, enforcement of the federal EPA motorcycle tampering rule outside of California. Some states have annual or biennial motorcycle safety inspections, but I have not heard of any inspecting for vehicle emissions systems tampering. That’s why CARB and the California Bureau of Auto Repair (BAR) would love to see smog checks for motorcycles. That’s at least a battle that we probably can win, like we did in 2010, if any such bills rear their ugly head.
As far as noise (which CARB does not regulate) — it has been against the law for aftermarket muffler manufacturers to produce and sell aftermarket mufflers any louder than stock since 1983. The federal fine for manufacturers of non-compliant and unstamped mufflers is $10,000 per muffler, plus 1 year in jail and $25,000 plus 2 years in jail for subsequent violations! However, have you ever hear of an aftermarket muffler manufacturer getting fined $10K, much less going to jail? Another example of federal noise law non-enforcement!
Not to rain on your parade — these unpleasant facts are provided so that you know what all of the rules of the game are.
As we discussed when I visited your authentic “Motorcycle Museum” home the other day, here’s my bike (1971 real Norton Commando Production Racer [only 200 ever made]) reposing in the den of our crib. Authentic Motorcycle Art! — John Paliwoda
