The diesel tuning business has changed a lot in the last four years. The Environmental Protection Agency is scrutinizing everybody from huge engine manufacturers like Cummins to small tuner shops.

New cloud-based tuner expands coverage for 2020–2026 Ford, GM, and Ram diesel platforms SuncentAuto announced the launch of ...

Despite the recent news that the Environmental Protection Agency (EPA) no longer lists emissions defeat devices as a top priority, there’s still no two ways about it: Tampering with a tune to defeat ...

Although motor vehicle enthusiasts have been modifying their cars and trucks forever, and sometimes in legally dubious ways, the practice of "rolling coal" has become an especially hot-button topic ...

Two Michigan-based diesel tuning companies are facing US$10 million worth of civil penalties for their part in the manufacture, sale, and distribution of diesel-emissions defeat devices, a huge strike ...