Showing the single result

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.


David,Mercedes CLS 320CDI

Got the Tunit....if I told you it took less than 3 minutes to fit...piece of cake. Have it on level 5 and will leave it there as there is no smoke and there is a noticeable improvement in performance (esp mid range...oodles more torque). Where the tunit does differ from the rest is that it is much more refined...I have had previous plug and plays...all these products were either full on or off which is not what I wanted for the Merc, which now is much more responsive. Regards David Received a week later... Nick Have had the tunit for one week so the honeymoon period is over...my thoughts? Its like driving a CLS 500 with the fuel economy of a diesel. I have left the module in position 5...the result oodles of torque...snappier acceleration and just all round a better car and would you believe smoother. What Merc are at with the standard ECU Ill never know. Tunit is streets ahead of previous plug and plays I have used.

Martin,Mercedes C350

2nd Tunit I've had. the first one has been on two Saab 93's, a Volvo V60 and now a Merc C350 - very impressed with economy improvement, drivability and increased performance - a good investment. If everyone knew what it could do you'd be unable to keep up with demand. Who wouldn't buy a product that effectively ups your engine performance to the next cubic capacity up in the range, yet drops the fuel consumption to the next model down - so it pays for itself and the kick in the backside is a bonus - it's a no brainer.