Turbocharged fuel stratified injection (TFSI) denotes a type of forced - aspiration ("turbo '') engine where the fuel is pressure - injected straight into the combustion chamber in such a way as to create a stratified charge. FSI (VAG) direct injection technology increases the torque and power of spark - ignition engines, makes them as much as 15 percent more economical and reduces exhaust emissions.
what does tfsi stand for on an audi tt
Turbocharged fuel stratified injection