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 ...

In the world of tuning, there are a handful of engines that have ascended to legendary status. Every tuner may have their own ...

Yet another tuning shop has been fined as part of the U.S. Environmental Protection Agency’s ongoing war on diesel emissions defeat devices. At the receiving end of the punishment this time around is ...

A clear walkthrough of how to set valve lash on a diesel engine, covering measurements, adjustments, and proper sequencing.

Learn how engine headers and DPF delete kits can improve exhaust flow, boost vehicle performance, and enhance efficiency with ...