The benefits of DIESEL POWER Greater torque and more HP Dieseltuning modules produce a 20-30% increase in HP and torque. Improved fuel efficiency Fuel efficiency can improve by as much as 3%. The engine produces more torque at lower RPM allowing you to remain in a higher gear instead of downshifting to climb hills or pull a heavy load. Smoother shifts Customer feedback reports an overall improvement to automatic transmission shift quality with a more positive feel and less slippage. Available for most Diesel models including; Audi, Mercedes Benz, BMW, Peugeot, Citroen, Volkswagen, Fiat Home