Janspeed Technologies Ltd is an automotive performance tuning company, specialising in exhaust systems. The company was founded in 1962 by János Ódor. With a workforce of 74 employees, Janspeed works closely with many luxury and performance car makers including Aston Martin, Lotus and Bentley. As well as customer products, Janspeed has also been a race car preparation business, which has among others, built works Datsun and later Nissan vehicles for the British Touring Car Championship and DTM.