Basically, all three manufacturers rob you of low-end performance and fuel economy for the sake of meeting emissions standards. On a stock diesel pickup, overall low-end performance, including throttle response - turbo-boost and even fuel mileage are all negatively affected by manufacturers de-tuning under 2200 RPM.
One of our very easy, Plug-N-Go diesel performance modules will restore your engine's low-end horsepower and effectively improve your fuel mileage - turbo-lag and throttle response instantly.
For more detailed info. please tell us what you drive.