Gearhead News

July 14, 2021
Your ECU tune may soon hold you up in California's smog test

From July 19, 2021, California will start testing for non-approved ECU tunes during its biennial Smog Check program. First spotted by Car Bibles (via Road & Track), the rules state that any software not provided by the car’s manufacturer or approved through a California Air Resources Board executive order will fail the test. Details of the… [#item_URL]