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Superior Performance

Performance is our passion and we work to get more out of your engine. Optimise your petrol engine today for more power, torque and fuel economy.

Adjustable Tuning

The Tunit Optimum Plus is easy to fit to any petrol vehicle by simply plugging in to the OBD port. The Optimum Plus uniquely can be adjusted from your phone Eco to Sport Plus. Transfer free to any nu

Go Eco

Easily switch between Eco, Sport and Sport Plus from your phone. The Optimum Plus provides a unique ability to fine tune to your needs.

REVIEWS

Martin ,VW Jetta 2.0 TDI CR 140

Hi Rik, I got the Tunit box this morning as you said and fitted it in ten minutes! Brilliant results, superb fuelling and smooth power delivery. The car really pulls harder in the higher gears and is lovely to drive. I drove a 2000 mile road trip and on average i was getting 54.3 MPG, that is a massive improvement from what i was getting before. Very pleased and your service was top notch. Once again many thanks, a fantastic product. Best Regards, Martin Macqueen.

Darren,BMW Z4 3.0i

Fantastic company to deal with. Tunit gives the vehicle more drivability and low down torque great for either towing or carrying heavy cargo. Inturn you get better mpg due to staying in top gear over longer periods. Used them for years wouldn't go anywhere else.