5 Year Warranty

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Superior Performance

The Advantage 3i provides superior performance economy specifically tailored to work exclusively on i-ART engines.

Adjustable Tuning

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.

Go Eco

Every driver and every car is different. Adjustment dial allows can be adjusted higher for mor power or lower to improve economy.


Anthony,Jeep Grand Cherokee 2.7 C

The Tunit has made the engine run more smoothly

Nina,Vauxhall/Opel Astra 1.9 CDTi

Cheers for doing the car today, it's fantastic now! I'm noticing a much better fuel economy already.