Originally Posted by g2_teg_na
i have a couple questions concerning the fuel setups of integras:
1.) is there a difference between the ls fuel rail and gs-r fuel rail?
2.) what about the fuel pump, worth upgrading to aftermarket?
3.) if i raise the compression to around 12.0:1 will i need any of these? (fuel pressure regulator, fuel pump, fuel rail, etc.)
1) No
2) If you have the mods that require extra fuel, a higher volume fuel pump is a good idea. More than likely a mild N/A build will not even come close to needing the extra fuel. In a boosted application, it is good insurance against leaning out and blowing the motor.
3) Probably not. You will probably need some larger injectors and a standalone to handle the fueling.