To appraise the value of a catalytic converter from highest to lowest by make/model, you can follow these steps: 1. Material type. 2. Emission laws. 3. Research the current market value of the precious metals in the catalytic converter. 4. Consider the condition of the catalytic converter. 5. Manufacturing differences.

Regeneration, or regen, of the DPF filter, is the process that burns the soot accumulation that is inside the DPF filter. Educating yourself on what forced regeneration is and how it works will help you understand your after-treatment system better.

10 tips for DPF cleaning you should know; 1. Clean your DPF at regular intervals. 2. Use a DPF cleaning additive. 3. Have your DPF professionally cleaned by a mechanic. 4. Take your car on a long drive on the highway. 5. Drive at higher RPMs... ...