Petrol
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Tunit Optimum
£248.33 Select options -
Tunit Optimum Plus
£357.50 Select options -
Tunit Optimum
£248.33 Select options -
Tunit Optimum Plus
£357.50 Select options
Superior Performance
Performance is our passion and we work to get more out of your engine. Optimise your petrol engine today for more power, torque and fuel economy.
Adjustable Tuning
The Tunit Optimum Plus is easy to fit to any petrol vehicle by simply plugging in to the OBD port. The Optimum Plus uniquely can be adjusted from your phone Eco to Sport Plus.
Go Eco
Easily switch between Eco, Sport and Sport Plus from your phone. The Optimum Plus provides a unique ability to fine tune to your needs.
REVIEWS
Henry, Nissan Navara 2.5 dCI
I found the tunit very easy to install and despite some sceptisism on my part about an 'add on box' as opposed to an ECU reprogramme, I am impressed with the unit. I had a motorway journey planned from North Wales to London in my Nissan Navara towing a Fifth Wheel and decided to drive half way, stay overnight, install the tunit the next morning and compare.
As both halves of the journey were predominantly motorway and dual carriageway, carried out in similar weather conditions (dry and blustery) and I set the cruise control to the same setting (68 mph) I think these are fairly accurate results. The first half of the journey without the Tunit the automatic gearbox seamed to be changing gear a fair bit and I achieved an average consumption of 13.1 mpg off the trip computer. The second half of the journey with the Tunit installed seamed to be more relaxed with the gearbox only changing occasionally and the vehicle able to hold it's speed more consistently, fuel consumption was 18.2 mpg, a significant improvement. I have not compared the performance when not towing in an objective manner, but subjectively it now feels more like a sports car rather than a big truck and I am averaging 32 to 34 mpg, so both performance and economy have improved.
I have had two vehicles with remapped ECUs - an Audi A3 2.0 TDI 140 PS and a Fiat Ducato 2.8 Motorhome. Both had impressive hikes in performance and improved fuel consumption, but not to the scale of the tunit, I have been changed from a sceptic to a convert.
Thanks for your help when making this decision it is not one that I will regret as I will recover the cost very quickly.
Paul, BMW 335d
Hi Dan.
Thank you for the chat on Friday. Transferred the unit to my new 335d. Using setting 6 the effect was immediate and obvious. Previous slight "hesitation" when pulling away now gone completely, car is much more responsive, the auto box seems to use lower revs, car is quieter and smoother, economy improved etc. Quite how the same unit can perform so well on 2 different cars is a mystery to me (though perhaps not to you guys!) but it does and I am again, deeply impressed with the product. A brilliant car just got a whole lot better.