I have Toyota Corolla SE Limited 1.5 Automatic 1993, its fuel consumption is very high almost 130km per CNG Tank, and its pick power also reduced we checked it from every aspect but nothing beneficial, i have changed plugs, checked CNG leakage , kit and timing etc but . . . . if any body with some good idea or experience that how to better its millage, previously it gaves 180km per tank
