Hello
Since the price of CNG has increased my a huge amount i m opting to completely switch back to petrol. Car has been on CNG/Petrol since 2007. What things should be done to tune the car completely on Petrol. Injectors cleaning, fuel pump, Air intake block etc. Please guide me about what should i ask my mechanic to do to make the car efficient on petrol. What petrol mileage should i expect from a 2003 Vitz. Engine was replaced 2 Years ago. Its 1SZ-FE 1000cc
