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

J.S.,Jeep Cherokee 3.0 V6

Although these are early days I have already been agreeably surprised by the significant improvement in fuel economy registered by the car's onboard computer. Although this was never really a priority in purchasing the device it is certainly a welcome bonus.

I am a very satisfied customer and glad to have been able to find a device which my insurance firm were able to readily accept without increasing my premium too ridiculously, a device which is British instead of German or American, and a device which seems to perform as claimed.

John ,Hyundai Tucson 2.0CRDi

I am extremely happy with the Tucson .. which is fitted with ?all the toys?, and in terms of being an automatic, I wouldn?t drive a ?manual? ever again .. it?s fabulous. Now that I have proof of the worth of the Tunit, even though the price of ?juice? is a great concern to we motorists, I can enjoy the car even more. Finally I can confirm, hand-on-heart, that the cost of the Tunit was worth-while .. I also fitted a K & N air-filter at the time of fitting the Tunit, which, reading the information supplied, should be helping the car ?breath? better. I have been impressed with the kindness shown by you and your staff .. my questions on the merits of Tunit were met kindly, and I appreciate that.