Is a high-flow Fuel Pump bad for stock engines?
Excessive fuel supply pressure disrupts the original factory-set balance. After installing the 340LPH high-flow Fuel Pump (such as Walbro F90000267), the peak fuel output pressure reached 6.5Bar, far exceeding the original factory design standard of 3.5-4.0Bar, directly causing the fuel pressure regulator to be overloaded by 120%. Honda’s 2023 Technical Update (SA093-23) confirmed that replacing …