I've been street legal(MC plates) for the last two years. I was just going to have it emission tested(idle test) to renew my plates. I just put in new plugs and will do the alcohol trick with or without the air cleaner on and that should do it so I'm told. The old plugs(althought original 3+ yeras) looked good, it idles fine and runs great. I don't have a copy of the last 2 years test report to see how it did then, but I will be copying this report before I turn it in to renew so I have a record of how it ran. Rich