BMW E9X E8X Low Pressure Bucketed Fuel Pump Expansion Modules (Stage 3-4) With Boost Reference Harness:Yes • (1) 4" silicone coupler

• (1) 4" silicone coupler

Compatible both as stand-alone tuning systems or in conjunction with performance flash maps where logging

this system improves throttle response

With our universal design the possible applications are limitless

BMW E9X E8X Low Pressure Bucketed Fuel Pump Expansion Modules (Stage 3-4) With Boost Reference Harness:Yes • (1) 4" silicone couplerThe Precision Raceworks BMW E9x E8x Low Pressure Bucketed Fuel Pump Expansion Modules (Stage 3 4) are designed for customers looking to run all blends of E85. All pump options below include Genuine Walbro 450, Walbro 525, or Walbro 535 fuel pump(s) capable of flowing up to 350% more fuel than the factory fuel pump, and all options are 100% E85 compliant. These expansion modules require customers to already own a Stage 2 or 2. 5 Precision Raceworks