The instrumentation provided is highly accurate, Includes an electric sensitive dynamometer, which allows To achieve fair and repeatable results. Other cylinder heads for the gasoline engine. Anything Instrumentation and controls are located on the Control panel made of melamine resin which comprises Multi color synoptic table. Variable compression ratio are provided to allow To study the effects on the efficiency of the engine. The engine can Be provided with a specific cylinder head fitted with Devices for the multi-channel indicator for Diagrams.