MD5 checksum is a 128-bit hash value (32 characters). Use checksum values. In practice, checksum values are mainly used in three situations. First, checksum value can be used to check data integrity when data is sent through telecommunication networks such as Internet.
Performance Exhaust System. The main purpose of an exhaust system is undoubtedly to route the spent exhaust gas out of the car's engine. Along the way the exhaust gasses may be used to drive a turbocharger and now-a-days it will most definitely incorporate a catalyst converter to reduce carbon dioxide emissions.
PAHs in the exhaust gas are split between gas and particulate phase. A fraction of the light, mostly 2-ring compounds is present in the gas. The most harmful compounds of four or more rings are found almost exclusively in the organic fraction (SOF) of diesel particulate matter. PAHs are present in diesel fuels, with their concentrations typically varying between 1.5 and 2.5%.