The elimination of the catalyst is also thought to minimize gas and engine oil usage while also increasing engine efficiency, but this is not the case. It is not an effective or inexpensive method of tuning. The catalytic converter is capable of working for 120.000 to 170.000 kilometers (74.000 to 100.000 miles) under optimal conditions.
Another factor why drivers desire to get rid of their catalytic converter is because it is worn out. It becomes clogged and must be changed when it fails, however, a new catalytic converter is quite expensive because of the valuable metals it contains, such as palladium, rhodium, & platinum.
A faulty catalytic converter can obstruct the natural flow of diesel exhaust from a car’s engine, resulting in increased pressure gradient within the engine, which can eventually lead to overheating. The pistons push exhaust gases out of a car’s engine, which passes it through the exhaust system then out the tailpipe.
The natural combustion process in a car’s engine is compromised when the exhaust pressure rises. Combustion occurs at precise intervals and in the correct amounts in a typical working engine. Because a damaged or defective catalytic converter can disrupt an engine’s typical combustion qualities, the engine must work harder to release the consumed exhaust or emissions.