adjustable fuel pressure regulator

[pureboiracer 0]

hey have seen a adjustable fuel pressure regulator for sale for about 150ish. wondering if it will do much? what would happen if i just took out the regulator and return line? im gessing serious overfueling? would this improve performance or jus sh*t everything up?

[320guy 0]

Id geuss that increasing fuel pressure would make it run pig rich and run like crap.

[Mike 1]

you really don't want to remove the return line, seriously bad idea.

increasing the fuel will do nothing unless you increase the oxygen for it to combust with.

[Assault 3]

you really don't want to remove the return line, seriously bad idea.

increasing the fuel will do nothing unless you increase the oxygen for it to combust with.

Bang on right there!

Every fuel system must have a pressure regulator and return line to set the appropriate fuel pressure.

In a fuel injection system your fuel pump pushes the fuel up through the lines and filter until it gets to the fuel rail where your injectors are located which subsequently squirt the fuel into the combustion chamber when they are told to operate by the ECU. The Pressure regulator sits on the end of fuel rail and lets fuel return to the tank via the return line to keep the pressure down to correct operating levels. The more fuel the injectors pump, the less fuel returns to the tank and vice versa.

If there is no fuel pressure regulator and return line the fuel will just keep getting pumped into the fuel rail and the pressure will build up. This will result in the injectors passing more fuel into the combustion chamber, resulting in the engine running rich and the ecu trying to correct it by adjusting its fuel trims. It will also put excess strain on the fuel pump and possibly burn it out rather quickly.

No gain and possible damage to components can result from this. so I recommend you dont do it.