Spool FX-170 Upgraded High Pressure Fuel Pump System | [M157]

  Spool Performance FX-170 High-pressure fuel pump upgrade Spool Performance is really excited to introduce our latest product offering to the Mercedes M157 community, the FX-150 high-pressure fuel pump upgrade. We have been testing this for almost a year now and here it is finally!! What is the FX-170? The FX-170 is an upgraded high-pressure fuel pump. The pump features a bigger bore size than stock that translates into roughly 50% more flow when compared to stock. The pump is completely E85 compatible and fully plug and play with no cutting or splicing of any kind required. The added flow will let you run much higher ethanol concentrations and also allow fueling for bigger turbos. Why do you need it? The stock HPFP on the M157 Motors is severely limited in capacity when trying to tune and raise the output of the motor. The FX-170 adds 50% more flow to the equation, raising the fueling limits on the platform and helping you run bigger turbos and/or higher ethanol concentration blend