By using Eco mode on your Tunit Optimum you can make drastic improvements to your fuel economy and save money by filling up less often.

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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 is easy to fit to any petrol vehicle by simply plugging in to the OBD port. The standard Optimum comes pre-set in one of three performance settings from Eco to Sport Plus.

Go Eco

By using Eco mode on your Tunit Optimum you can make drastic improvements to your fuel economy and save money by filling up less often.

REVIEWS

Bruce,Vauxhall/Opel Vectra 1.9 CDTi 150

I have recently fitted a tunit to my Vectra 1.9 CDTi 150bhp. I cannot believe the results, because not only has it improved performance more than I expected, but also, even with a heavy right foot, I can report an extra 6 mpg around town, increasing to 8-9 on a journey. Well worth the money.

John ,Toyota Landcruiser HJ100 4.

Originally found Toyota sluggish and fuel economy not great. Towing greatly improved as did fuel economy and performance