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

It's common knowledge that excessive heat can be extremely detrimental to your BMW transmission

Limited Lifetime Warranty: Backed by a warranty for peace of mind

With our universal design the possible applications are limitless

Boost added is user adjustable with the optional BMS data cable with the default boost gain set to 3

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