We need more than the MA law. We need to have the law change to permit completely replacing engine control systems while maintaining a street legal car. There a

We need more than the MA law. We need to have the law change to permit completely replacing engine control systems while maintaining a street legal car. There are open ECU's available which you can retrofit into any car, but they're illegal for street use because of the way emissions laws are structured. The US law is very proscriptive - you musth have the factory ECU with the factory tune with the factory catalyst, etc. Instead, we need results based laws for this stuff, something like a limit on engine emissions on a particular duty cycle, and leave it to the aftermarket companies to figure that out. Right now, most engine mods you do are not technically legal, especially in CA and the handful of other states which have adopted its emissions laws, so you try to hide what you've done and not get caught, even though you have perfectly clean emissions. Unfortunately, lots of people turn their cars into gross polluters because they like the loudness of straight pipes or want the extra few HP from an open exhaust, and in an attempt to stop these, the laws are making it more difficult for the rest of us.