Negative Pressure Supercharging is a revolutionary new HTCSI supercharging combustion process that is produced by a unique combination of mechanically simple parts and highly advanced processes.

NPS uses NO air pump, complex parts or emission controls.

For more details see...
What is NPS?
Performance Improvements
Working prototype engines

The bullet-shaped Thermocharger air cleaner housing plays an important part in the supercharging combustion process by increasing the speed and pressure of combustion.

This allows Negative Pressure Supercharging to substantially improve torque, horsepower, fuel efficiency and emissions.