N54 & N55 BMW E Chassis Low Pressure Fuel Pump Upgrade (Stage1-2) Alpina B5 (F10/F11) • Improved throttle response

• Improved throttle response

Designed for maximum airflow and improved turbo efficiency

While it's not the only tuning system that operates this way the JB4 separates itself from the competition with much more advanced connection points and processing including CANbus

• Reuses OE filter cage and o-ring

N54 & N55 BMW E Chassis Low Pressure Fuel Pump Upgrade (Stage1-2) Alpina B5 (F10/F11) • Improved throttle responseUpgrade your BMW 135i, 335i, or X1 with our high performance Low Pressure Fuel Pump (LPFP) Upgrade, designed to significantly enhance your vehicle's fuel delivery system. Our kits are engineered for optimal performance, providing the perfect solution for enthusiasts looking to unlock their engine's potential. Stage 1 LPFP Upgrade Inline Enhancement: Designed to be installed inline with your stock LPFP, this upgrade delivers approximately 50% more flow