Starting on the passenger side, Cummins moved the diesel oxidation catalyst closer to the turbo for a hotter, cleaner burn.

There is a huge selection of cold air and ram air intakes on the market - but these are among the best. A cold air intake is one of the most common modifications made to modern-day vehicles.

Standardized cold air intakes exist, but most high-quality ones will be specific to your vehicle’s make and model. There are ...