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The Advantage 3i provides superior performance economy specifically tailored to work exclusively on i-ART engines.
The Tunit Advantage 3i premium model provides easy adjustment via an external dial or bespoke fine tune through our national dealer network for maximum results.
Every driver and every car is different. Adjustment dial allows can be adjusted higher for mor power or lower to improve economy.
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.
Stephen , Ford Focus 1.8 TDCi
Since fitting the tunit product I noticed smoother response from the engine even though the car was only 6 months old and obviously more power. Power difference showed more on the motorway when overtaking as plenty of power on tap without gear changes. Fuel consumption is good averaging just under 50mpg if i drive softly enough. Very pleased with the product.