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About is the premier authority online on DPFs. Here, we explore all aspects of DPF technology, emissions laws and regulations as well as the effects of DPF delete and general exhaust systems.

Who Is Behind This Site?

I am John Henry, a long time tuck driver and mechanic experienced in cross country hauling. I have seen first hand the effects of diesel trucks on the environment and so I’ve tried my best to lessen those effects with my own heavy duty vehicles.

John Henry

John Henry

I created this site to help everyone understand the importance of clean emissions and how important the DPF is towards ensuring clean emissions. I explore topics like improving the performance of your DPF and avoiding DPF delete.

I hope you’ll learn something new here to improve your exhaust system as well as avoid EPA penalties. If you have any questions, be sure to contact me at