Hi...
No need to use a higher capacity injector if you don't need the it. Considering that most Mitsu comes in rich with the fuelling. Going to 390cc will bog the car down and Fuel consumption will suffer. Just stick with the normal injector if you're not doing anything radical like turbocharging your MIVEC! Even then you'll need something to control the fuel. cheers
While traveling at 140km/ph, car was under power n was vibrating . Its like 'semput' when pressing the pedal. Slow down was fine ,press the pedal /floored to max ,rpm doesn't goes high . Could this cause by steeper...