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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.

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.


C , Honda CRV i-ctdi Exec

I fitted the Tunit as soon as I got it (on time as promised) I then headed off on my scheduled trip to Wales. I notice immediate improvements to smoothness and engine sound. It has changed many detailed driving changes to many to identify at this time but two stand out: Several times I thought I was in forth when I was in sixth due to improved torque and an approx 10% gain in fuel economy but that is only one trip and less than a tank of fuel. Thanx for your help.

Ian, Toyota Rav 4 2.0 D-4D

Arrived quickly and what a piece of kit! Fitted to my 2004 Rav4 and the acceleration, performance, fuel consumption, pretty much general running of the engine is unbelievable! Not played with the settings yet but will be doing soon. As for fitting, if you do have a Gen2 Rav4 take it to be fitted for you due to the fiddly area of rail senor!