In our case, we adjusted the fuel pressure regulator to reduce the pressure from 9 psi to 5.5 psi. We will also mount a remote fuel pressure gauge to monitor the fuel pressure to ensure that there ...

A leaking regulator (usually caused by a ruptured ... 6.The next step is to check for leaking fuel injectors. Install the fuel-pressure gauge, pressurize the system, turn the key off, and note ...

Gauges like the fuel level, oil pressure, and water temperature will ... Lastly, there's the instrument voltage regulator or IVR, which takes battery voltage and reduces it to a 5-volt signal ...

As a result, most vehicles have OEM fuel pressure regulators to keep the required constant pressure in the fuel rail. But with performance modification in mind, fuel ratio can be tinkered with.