The Black Market Parts BUCKETLESS LOW PRESSURE FUEL PUMP's 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. Pump(s) ship(s) assembled with OEM connector to plug into the factory fuel pump top hat making it quick and easy to install. The modules below require customer to already own a stage 2 or 2.5 BMP Bucketless Pump Stage 3 (4.3 gallons per minute)Our Stage 3 bucketed module will add a 450 pump to your existing PR Stage 2 or 2.5 kit. This will include all necessary hardware and wiring to upgrade your pump to a stage 3 and support up to 1000whp* (Rated for 875whp on 100% E85) Stage 3.5 (5.1 gallons per minute)The Stage 3.5 pump module adds a Walbro 525 pump to your existing PR Stage 2 or 2.5 kit. This upgrade module will include all necessary hardware and wiring to upgrade your pump to a stage 3.5 or 3.75. Once combined with your existing kit, this pump combination can support up to 1,100whp* (Rated for 950whp on 100% E85). While all bucketless fuel pump flows .2gpm more than a bucket design that retains the venturi it comes at a cost. Bucketless pumps should not be driven on tanks lower than ¼ full and should not be used for road course racing. This is not a disadvantage of only our bucketless system but is a disadvantage of all bucketless pump designs (or bucket designs which delete the venturi). If you do not plan on road course racing (not street racing) and are responsible at maintaining ¼ tank of fuel during spirited driving this is the pump for you. Note: To reach the advertised ability of these fuel pumps use of the Precision Raceworks in tank filter regulator assembly is required. This is a true plug and play solution that anyone can install in their home garage and start taking advantage of the benefits right away. Factory BMW pump Pump flow 72psi (5bar): XXX GPM Pump Weight: Horsepower Supported Pump Gas: Horsepower Supported 100% E85: NOT COMPATIBLE Stage 2 Pump flow 72psi (5bar): XXX GPM Pump Weight: Horsepower Supported Pump Gas: 600 Horsepower Supported 100% E85: 550 Aftermarket EKP Required: No Stage 2.5 Pump flow 72psi (5bar): XXX GPM Pump Weight: Horsepower Supported Pump Gas: 650 Horsepower Supported 100% E85: 575 Aftermarket EKP Required: Yes Stage 3 Pump flow 72psi (5bar): XXX GPM Pump Weight: Horsepower Supported Pump Gas: 1,050* Horsepower Supported 100% E85: 875* Aftermarket EKP Required: No Stage 3.5 Pump flow 72psi (5bar): XXX GPM Pump Weight: Horsepower Supported Pump Gas: 1,150* Horsepower Supported 100% E85: 975* Aftermarket EKP Required: No Stage 4 Pump flow 72psi (5bar): XXX GPM Pump Weight: Horsepower Supported Pump Gas: 1,200+* Horsepower Supported 100% E85: 1,000+* Aftermarket EKP Required: Yes *To reach the advertised ability of these fuel pumps use of the Precision Raceworks in tank filter regulator assembly is required. BMW 1 Series 128i 2007-2013 (E8x) BMW 1 Series 135is 2011-2013 (E8x) BMW 1 Series 135i 2011-2013 (E8x N55) BMW 1 Series 135i 2007-2010 (E8x N54) BMW 3 Series 325 325xi 2006 (E9x) BMW 3 Series 325 325i 2006-2013 (E9x) BMW 3 Series 323 323i 2006 (E9x) BMW 3 Series 335 335xi 2011-2013 (E92/E93) N55 BMW 3 Series 335 335xi 2007-2010 (E92/E93) N54 BMW 3 Series 335 335is 2011-2013 (E92/E93) N54 BMW 3 Series 335 335i 2011-2013 (E92) N55 BMW 3 Series 335 335i 2007-2010 (E92/E93) N54 BMW 3 Series 328 328Xi 2007-2013 (E92/E93) BMW 3 Series 328 328i 2007-2013 (E92/E93) BMW 3 Series 335 335xi 2011 (E90/E91) N55 BMW 3 Series 335 335xi 2007-2010 (E90/E91) N54 BMW 3 Series 335 335i 2011 (E90/E91) N55 BMW 3 Series 335 335i 2007-2010 (E90/E91) N54 BMW 3 Series 330 330xi 2006 (E90/E91) BMW 3 Series 330 330i 2006 (E90/E91) BMW 3 Series 328 328Xi 2007-2011 (E90/E91) BMW 3 Series 328 328i 2007-2011 (E90/E91) BMW M Series 1M 2011-2012 (E82) BMW X Series X1 2009-2015 (E84)