Every driver and every car is different. Choose a setting 0-9 from the Advantage 3 external dial. Move higher or lower to improve economy.

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Superior Performance

The premium Advantage 3 provides the best in performance, savings and aftercare for your engine. Optimise your diesel engine with outstanding torque and BHP. Average fuel savings of 12%

Adjustable Tuning

The Tunit Advantage 3 premium model provides easy adjustment 0-9 via an external dial or bespoke fine tune through our national dealer network for maximum results.

Go Eco

Every driver and every car is different. Choose a setting 0-9 from the Advantage 3 external dial. Move higher or lower to improve economy.

REVIEWS

Ian,Nissan Micra SR 1.5i

I’ve had 5 Tunit devices over the years . 4 were in new Nissans with the Renault 1.5 diesel, and as they were hard wired sold them on fitted. This Optimum Plus ,which I’ve only ever used for five years in a petrol Nissan Micra C+C 1.6 Essenza ( one of the first made in 2005), again, has amazing results. The car consistently does 45mpg , is incredibly flexible (in 5th at 30 mph on the flat on a trailing throttle )..in Sport Plus. Using a maximum of 6,000 rpm when fancied, for a car probably only worth £2k , it seems quite sharp! A bit of a Wolf in Sheep’s clothing. I only use Shell V Power and scrupulously keep on top of the servicing, even though it only does 3,000 odd miles a year. Once again, thank you for your kind assistance.

John,Landrover Range Rover

2nd vehicle i have had tunit on and my range rover is a v6 but drives like a v8! Consumption improved from 25 to 30 miles per gallon. Already have recommended it.