2. Modify the turbocharger. Upgrading the turbocharger can provide the engine with more boost pressure, which will result in greater torque and greater engine output.
3. Improve the air intake system. By adding a cold air intake, improving the airflow of the filter, and optimizing the intake and exhaust system, additional gains can be made to engine performance.
4. Lighten the car. Lightweight wheels, lightweight body panels, and a smaller battery can be used to reduce any unnecessary weight of the car and improve it's power to weight ratio.
5. Tune the Engine's Ecu . Diesel tuning usually involves modifying ECU parameters on fuel delivery and turbo wastegate control to increase performance within what would otherwise be deemed safe limitations
