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  • Franco Melechi
    Yes, they works!
    After a long time of testing this obd2 tuning device, I must say that they works. I test the Nitro and the energy save device. The Nitro I notice very well the power added more visible at low engine rotation and at high rotation cycle. The energy save device works same but I need more numerical info, because when you go to fuel you have inside a little of fuel, than need more accuracy measurement, but I assume that it works for what is written on the package -10/-15% saves fuel!
    For the price I suggest to purchase it!

    May 13,2019