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

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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

hazel,VW Passat

Well, words can't describe it. I think that I said to you that I never expected to change my other Passat and this one was in fact a most unexpected present (some present!!) and I bought the tunit, which makes the car absolutely stunning. It is such a wonderful combination of power, torque and flexibilty; I find it breathtaking - as do all passengers to date. I can hardly wait to see how it performs with the caravan when I set out tomorrow. I will send you a postcard from Provence to let you know what the verdict is, but I know that it will be superb. I have always loved cars, but have never driven anything like this. I just can't thank you enough

Keith ,Nissan X Trail

Immeadiate noticable improvement in performance. Really pleased with purchase. Good value for money