For those living in California or other states that have used the Golden State's smog laws as the basis for their own, modifying the engine of most 1976 and later gasoline-powered vehicles is nearly ...

Emissions testing has become a hot topic in the '90s and will continue to generate more interest as testing is enforced nationwide. You can count on it. For those rodders who have never experienced a ...

OBD-II diagnostic device BlueDriver interprets engine error codes to suggest what might need fixing, and lets you know if your car is ready for a smog check. Wayne ...