FI= forced induction; ie turbocharger, supercharger....anything that pressurizes the intake charge.flfungirl said:
NA= normally aspirated-this just means no forced induction-this is how your car is now.
FI= forced induction; ie turbocharger, supercharger....anything that pressurizes the intake charge.flfungirl said:Newbie Q..what does this mean...FI & NA route?