2 Year Warranty

Showing 1–9 of 13 results

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.


Ian ,Volvo V70 D5

easy to fix. does increase power and helps fuel efficency

Terry ,Fiat Ducato 2.8 JTD

I use Tunit in my 4.5 tonne Motorhome - It improves overall performance without using more fuel - I am very happy with it