Spool Stage 3 Low Pressure Fuel Pump | AMG E63/CLS63/GLE63/S63/SL63 [M157] m178 The FX350 makes your injectors

The FX350 makes your injectors flow 40% more fuel before maxing out the injection window limitations

With the use of high-pressure pumps now being able to support DI fueling

The stock HPFP on the M256 Motors is severely limited in capacity when trying to tune and raise the output of the motor

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Spool Stage 3 Low Pressure Fuel Pump | AMG E63/CLS63/GLE63/S63/SL63 [M157] m178 The FX350 makes your injectorsIntroducing Spool Performances Stage 3 LPFP Upgrade for the Mercedes AMG M157 engine a technical advancement in low pressure fuel systems designed to meet the demands of high output applications. Our upgrade kit is engineered to address the inefficiencies of standard electric fuel pumps by incorporating a dual pump mechanism that operates in tandem with your vehicle's boost cycle. The primary pump maintains steady fuel delivery, while the secondary