Consider cleaning your DPF and EGR professionally instead. If you are racing: Buy the software, but trailer your truck to the track.

However, the legal risk is higher than ever. The golden age of deleting diesels is ending. Fines are steep, and emissions testing is getting smarter.

If you own a modern diesel vehicle, you’ve likely heard the acronyms DPF (Diesel Particulate Filter) and EGR (Exhaust Gas Recirculation). These systems were designed to make diesel engines cleaner, but for many drivers—especially those in performance tuning or heavy-duty hauling—they have become a source of frustration.