Another common method of car tuning includes the replacement of the exhaust system’s catalytic converter with a new one, which may be ceramic or carbon based. When the catalytic converter is replaced, it helps in eliminating poisonous byproducts in the exhaust system, and at the same time, increases the power of the exhaust gases by converting them to less harmful substances. When this process is carried out well, the power gains may become fairly significant. Car tuning has a very broad scope and can be performed on a domestic car as well as an exotic sports car. It can also be carried out by professional tuners to gain an advantage in competitive events.