Jeep Grand Cherokee Diesel K&N Filter
The filter assembly was very straightforward, and took about 90 minutes, working slowly. Diagrams for instructions could use improvement as well as labeling of hoses. BUT, the increase in torque is substantial, and can be felt across the entire RPM band from 1000 to 4000 RPM. Marginal increase in noise but not intrusive in the least MPGs up about 2MPG highway. Very worthwhile I feel.