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Engine power is produced through the change of energy from the chemical energy of the fuel by the combustion process into mechanical energy in the piston. This study aims to determine the effect of dual catalyst pipes using a hydrocarbon crack system on engine power. The design of this study used an experimental research design; the initial stage of this experimental study was by making a specimen that is a double catalyst with a spiral pipe on a hydrocarbon crack system. Retrieval of data starts from 1500rpm to 6500rpm engine speed with a lap difference in each test of 500rpm—data analysis techniques using numbers from research. They were testing the engine power of the motorcycle using the dyno test. The research data between standard machine testing results with the results of engine testing using a hydrocarbon crack system. Increased engine power occurs in HCS with a double catalyst and uses two fuel tubes. Vehicle power increased with the highest percentage by using one fuel tube that occurs at 5500rpm rotation, with an increase of 34.45%, i.e., obtained power of 6.73. Simultaneously, the use of 2 fuel tubes increased by 57.2% at 4500rpm with a power of 5.76.

Analysis of The Effect of A Catalyst Hydrocarbon Crack System Spiral Pipe Against The 4-Stroke Motorcycle Engine Power