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

Robert,Citroen

I only do small mileage most of the time but it does save money

Anthony ,Mercedes ML 270 CDI

I have always had performance upgrade on all my cars history butthe Mercedes Diesel was my first. Having visited the motorshow and did some research tunit offered value for money and true figures to what is claimed. There was a huge difference when I fitted the Tunit kit that the egineer who installed it was very impressed. Here is an expample We drove on a stretch of road standard form and we hit 74mph at a marked point.After installing Tunit the same point we hit 89mph as the tourqe band was huge. Im pleased and well happy still reliable and savings on fuel agerage mpg gone up by 5-8mpg more.A good and worthwhile investment....