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.
WHEN: Any time your engine is running. THE CULPRIT: Hydrogen sulfide in the exhaust, which is produced by trace amounts of sulfur in gasoline. It's supposed to be converted to sulfur dioxide in your catalytic converter. This may be indicative of a fuel-injection problem, and can be cured by a sharp mechanic.