Everytime I get readymade answer from Tata & Fiat that heavyness,powerloss,poor low end torque all performance related problems are due to only bad fuel quality. Even from Mr.Mangesh of fiat India. Friends I sold off my former 75 hp punto because of this problem. & now brand new 90 HP is also giving again such headache. fiat has tunned MJD to accept bad quality Indian diesel. I bet that if we run original Italian MJD engine on Indian fuel it will fire dozons of ECU errors.