FX-170 High Pressure Fuel Pump

The Spool Performance FX-170 High-Pressure Fuel Pump upgrade is engineered to overcome the limitations of the stock HPFP in M177 engines. Its larger bore design significantly increases fuel flow by roughly 50% compared to the original pump, directly addressing fueling limitations that hinder performance tuning. This kit includes two FX-170 upgraded high-pressure fuel pumps, a Bosch-spec 10-micron high-flow fuel filter for optimal debris protection, and upgraded, E85-compatible braided steel nylon core fuel lines. An optional Ethanol Content Monitor with mobile app integration and BLE 4.0 connectivity is also available. However, calibration changes are mandatory before starting the vehicle to prevent potential damage and voiding the warranty. Spool Performance can supply calibration details to your tuner or help you find experienced professionals. Custom tuning is essential for maximizing the benefits of this pump upgrade based on your specific vehicle setup and conditions. Proper low-pressure fueling is critical for the durability of high-pressure pumps and injectors. Inadequate low-pressure fuel supply can lead to detectable damage, voiding warranties. It is strongly advised to plan for necessary low-pressure fuel system upgrades in conjunction with this high-pressure pump.