After doing research and carefully selecting the right components for the necessary upgrades to get more power it could still be kept smooth for dune–climbing and outrides.

I soon discovered that no modifications are worthwhile without being able to tune it to perfection. The PRS2 complete engine management system was selected from Perfect Power. The carburettors were stripped and machined to fit and host the injectors. One injector per carburettor. The fuel is supplied by an external fuel injection pump via 10mm Festo hosing which also acts as a fuel rail. The fuel pressure regulator is sourced from a normally aspirated engine. Large feed lines were fitted to the fuel injection pump to prevent cavitations. The individual long rubber intakes were kept to create maximum torque at low RPM. A custom camshaft with ultra high lift degree and duration has been fitted to highly ported and polished cylinder head including the carburettor adaptors. Swirl polished valves and three-angle valve job completes the cylinder head.

Doing the installation of the PRS was simple but also done in a professional manner. The unit is very small and fitted snug under the seat, kept away from water and dust. This even though the unit is water and dustproof because of encapsulation of all components. The original magnetic sensor on the magneto supplies engine reference. The original charging and fan (cooling) wiring circuits were left in place with no changes. The whole CDI unit and all wiring has been removed to make place for the new PRS.

The polarity and filter values were checked on an oscilloscope. A map sensor was also fitted to give extra response to the engine. Load is being sensed by a TPS (Throttle Position Sensor). The PRS allows for a lot of torque through the entire rev range because of a complete ignition map.