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Superior Performance

The C-11 provides incredible torque just where you need it in any commercial condition. Fuel consumption has been shown to improve across commercial fleets in all sectors

Adjustable Tuning

The Tunit C-11 is adjusted on installation to meet your vehicle and load needs. Dealer install recommended.

Go Eco

The C-11 is used predominantly for better economy. A bespoke tune provides exact adjustments for the best economy while delivering maximum performance.


John ,Nissan Navara 2.5 dCI D40

I need a large vehicle to transport me and my heavy shooting kit to competitions all over Europe. With fuel costs the way they are, economy on a day to day basis will always be a problem. But my Navara always does in excess of 30mpg with the Tunit fitted. The more I travel, the more I save. I once followed a Porsche Caynne for several miles in Germany on the autobahn. He slowed down at his exit to have a look at what had kept pace with him! So no complaints about performance either.

Mike,Nissan X-Trail 2.2 DCi

Hi Daniel, we have been down to London and up to Newcastle a couple of times and still got the extra 50 miles to the tank. Performance still better than standard. If i push it obviously the MPG goes down a bit but still over the normal 350 to a tank. So still happy, if i need any fine tuning i will ring and pop over. Cheers