Why you guys still use those hoax tuning boxes? I think there is a proper shop for make real tuning adjustments and dyno your car? Example we can make modified program in that ECU what lower you consumption, we adjust injection timings better and more power and torque on low rpm. These boxes ground injectors and often add more rail pressure and result will be leaking injectors and rough noise on pressing gas pedal. I thought these boxes are in history in Toyotas too... I hope you got good results and engine stays running. I have my 2009 4WD Hiace 155hp and 380nm torque, average consumption is 9-10 liter/km, before tune it take almost 13... Measured with MAHA 4WD dyno.