A Dauphin County man has pleaded guilty to charges of conspiring to violate the federal Clean Air Act by illegally modifying ...

meaning you'll need to avoid any such tampering when swapping your engine. As for the emissions regulations in your state, they can vary dramatically, so you'll need to do some homework before you ...

Yamaha PG-1, one of the models recalled in Vietnam due to suspected engine serial number tampering. Photo by VnExpress/Luong Dung The recall was issued after owners of some Yamaha Grande motorbikes ...

A mass air flow (MAF) sensor measures the amount of air entering an engine, helping the car’s computer adjust fuel delivery ...

Yamaha is working with Vietnamese authorities to investigate the issue. Vietnamese law prohibits tampering of engine serial numbers and authorities can seize vehicles if they see signs.