2 ms·

It is a federal crime to tamper with emissions systems I believe.

• bluGill 3y ago
  Right, but it isn't enforced. There are a couple exceptions, but for the most part nobody with power to enforce the law will think about it.
  • dghlsakjg 3y ago
    Unfortunately, true. They have gone after the big suppliers and shops though, and that seems to have put a damper on it, if only a little.