Every driver and every car is different. Choose a setting 0-9, higher or lower to improve economy.

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Superior Performance

Performance is our passion and we work to get more out of your engine. Optimise your diesel engine with outstanding torque and BHP. Average fuel savings of 12%

Adjustable Tuning

The Tunit Standard installed by you or through our dealer network. Adjustable 0-9 to your needs to bespoke tune through our dealer network.

Go Eco

Every driver and every car is different. Choose a setting 0-9, higher or lower to improve economy.

REVIEWS

Ben,Nissan Pathfinder 2.5 dCI

Prior to fitting, the Nissan was returning an average of 37 mpg which is somewhat more than the Nissan figures, but I put that down to the area I live in, not much traffic or traffic lights. Since fitting, it is now doing over 41mpg, even with a trailer on, and the pull from 2500 rpm is terrific. It was not bad before.

Ivan,Saab 9-3 1.9 TiD

Hi Dan, Have left it a while to thoroughly check my findings, and am very pleased - this last tweak, along wih the K & N filter means I am now locally on 44 to 46MPG, on a run 57 to 60MPG, the torque does not seem to be affected for it still accelerates in high gears from 1200RPM, and lots of torque by 1500RPM, but the even more surprising result over two longish but in traffic journeys tugging my 1500kg caravan gave me 36MPG, excellent. All on a tank top fill basis so no computer optimism included! This setting certainly suits the engine. Thanks and regards,