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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.
The Tunit Optimum is easy to fit to any petrol vehicle by simply plugging in to the OBD port. The standard Optimum comes pre-set in one of three performance settings from Eco to Sport Plus.
By using Eco mode on your Tunit Optimum you can make drastic improvements to your fuel economy and save money by filling up less often.
Saly,Honda Civic 2.2 TDi ES
My husband has just had a tunit module fitted to my new car which is a Honda Civic 2.2 CTDi ES, I can say that it is fantastic!!!!!
colin,Toyota Rav 4 2.0 D-4D
Have been running Rav on setting number 8 for a while and fuel consumption on average about 5% better than standard but because the engine responds better I do tend to drive quicker than I should so don't save as much as I probably could. Torque much better because I can drive in higher gears at lower speeds than standard set up. Tows 2008 Swift Challenger 480 really easily without too much gear changing. Have recently moved the control to number 9 and so far seems to have improved performance and torque even more. I was talking to fellow tower with standard Rav 2.0 D4D and he was saying he was disappointed that he had to keep changing gear when towing due to lack of torque. I did give him your phone number. Very pleased with the system in general. Easy to fit except for the silly place Toyota put the fuel rail connector plug.