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

Ben,Nissan Pathfinder 2.5 dCI

Prior to fitting, the Nissan was returning an average of 37 mpg which is somewhat more than the Nissan figures, but I put that down to the area I live in, not much traffic or traffic lights. Since fitting, it is now doing over 41mpg, even with a trailer on, and the pull from 2500 rpm is terrific. It was not bad before.

Chris,BMW X1 xDrive20d

I can comfortably do 50mph in 6th now where it struggled before, and revs are much quicker to get moving. It's still a big lump as you say;) but feels a lot more sprightly