A turbo uses waste energy as it converts the lost energy in the exhaust gas to compressing the air going into the engine , as this is reducing the energy in the exhaust it reduces the noise , .
Why the turbocharged cars are quieter .
A turbo uses waste energy as it converts the lost energy in the exhaust gas to compressing the air going into the engine , as this is reducing the energy in the exhaust it reduces the noise , hence why the turbocharged cars are quieter .