 Vehicles fitted with the C20XE engine produced before 1991 can have their catalytic converter legally removed, and the vehicle will still comply with MOT regulations.The C20LET engine was introduced in 1992, and was fitted to the Opel/Vauxhall Vectra Turbo/Cavalier Turbo, Calibra Turbo, and the South African made Opel Astra 200t S. It is similar to the C20XE, apart from the primary addition of a KKK-16 turbocharger, forged Mahle pistons, Bosch Motronic M2.7 electronic engine control unit, and black plastic plenum/'top hat' shroud with a 'turbo' script.It produces a DIN rated output of , and generates of torque.