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.

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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

Martin ,Seat Leon 2.0TDi FR 170BH

I just thought I would drop you a quick thank you message for the Tunit you supplied me recently. The power difference compared to standard is amazing on my car. The power delivery in 3rd and 4th gears is really good. I think I?ve shocked a couple of other drivers recently who were already driving quite powerful cars !!! I?ve set the Tunit on setting 9. I got 500 miles on my last tank of fuel and that was driving ?enthusiastically?  I was only getting about 400 miles to a tank previously. Kind regards and many thanks.

Ken ,Skoda Skoda Octavia VRS 2.

Fitting it was a doddle, took all of 15 seconds. I love it, the midrange throttle response is brilliant. When I fill up the projected distance per tank is shown as 685 miles, where it used to show 590. I've not yet used a full tank so I can't give you definite figures, but it does look encouraging. I have left the device set at factory settings (mark 5). Is there any downside to cranking it up to full power? I suppose the next question would be if there are any benefits to cranking it up?