Illegal engine modifications, often referred to as engine tuning, involve altering a vehicle’s engine to enhance its performance or efficiency beyond the specifications set by the manufacturer.
These modifications can range from simple adjustments, such as installing a cold air intake or a performance exhaust system, to more complex alterations, such as increasing the engine’s compression ratio or installing a turbocharger or supercharger. While some engine mods are legal and within the manufacturer’s guidelines, others are prohibited by law due to safety, environmental, or noise concerns.
