Switch Between Sports +, Sport, Std Or ECO Via App

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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

Jordan,VW Polo 1.4 Blue GT

I would highly recommend Tunit, great customer service. Both the Optimum Plus and Power Pedal have made a considerable difference to my car with regards to acceleration. Considering I can change the settings on the Optimum Plus, I have never actually wanted to and have been more than happy with it on Sport +. Glad I bought these instead of getting a re-map as I can unplug and plug in whenever I want; it’s great!

Keith,Renault Clio dCI 80

I started compiling this report to you in June, my Clio, together with it's Tunit, being 12 months old with 20,000 on the clock, but the sun kept shining so working outside took precedence over the computer. Here are some facts and figures on the cars perfomance. Most of my driving is on country lanes and B roads with some town miles, this type of driving gives regular averages of 36 mph and 67 mpg. I have made a number of trips to Southern England, doing most of my driving early morning to avoid delays. A typical round trip of 650 miles (90% motorway) giving averages of 69 mph and 61 mpg Lest you think I pussyfoot around, I had to replace a 4 Continental tyres at 12,500 miles, I guess the road surfaces on North Lancs roads are abrasive... Renault expect the Clio to return 67 mpg overall, but as I recall the long term test results in Diesel Car show consuption of their Clio to be mid 50's. Are the DC drivers thrashing their Clio, day in day out, or are the Renault figures overly optimistic? Either way I am more than happy with my Clio with the Tunit fitted. You may recall that my Clio was the first 80 bhp you had worked on and the Tunit was tuned to give maximum performance through the gears, rolling road tested at 103bhp. Once again thank you for your superb after sales customer service.