BMW fuel pumps run at a very high pressure in order to properly supply the injectors with fuel. A failed pump will allow the car to crank, but wont kick over. Turner Motorsports carries Genuine BMW pumps that will have you back on the road in no time.
Spool Performance is a top name in the BMW Forced Induction industry. Their team of young and intelligent engineers pair their passion for the industry with a rich education background, which results in a high-quality enthusiast-minded products. Spool Performance's state-of-the-art upgrades for your BMW fueling systems are a surefire way to make more power, reliably. The Helix from Spool is simply a planetary gearbox for your High-pressure fuel pump. The particular configuration of the gears and their spatial fixturing allows an axial increase in shaft speed from the input to the output of the unit. The early N55 high-pressure pump is a very capable and over-engineered piece of hardware. As we start tuning and pushing more power, we start seeing drops in the high pressure. What is happening here is that the high-pressure pump is not able pump as much fuel as the injectors are injecting into the cylinders and hence causing the rail pressures to drop. The pump at this point is running out of displacement volume. With a rotary pump like the continental HPFP, an easier way to increase displacement is to spin the pump faster which results in an increased number of delivery strokes per cycle. The Helix helps you do exactly this and thus helps overcome a big limitation in early N55 fuel systems without the complexity of a secondary port injection system.
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If you plan on upgrading your turbos or increasing power in some other way, it is important not to overlook your fuel pump. Both low and high-pressure fuel pumps can only flow so much fuel, limiting power potential regardless of turbo size or other power adders, especially when running ethanol blends. Upgrade your BMW fuel pump with Precision Raceworks' F-Chassis High-Performance Fuel Pump Kit. Precision's low-pressure fuel pumps are designed to flow significantly more fuel than your BMW's stock system, ideal for customers who are upgrading their vehicles or plan to run blended fuel or E85 alone! Best of all, these pumps ship completely assembled and ready to install! New pump, new fuel filter, and new sending unit included! 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. By design, a fuel pump such as this is ideal for daily driving and racing applications of all kinds. This system keeps the primary pump fully submerged in fuel regardless of tank level or the g-force the car is subjected to. Precision Raceworks' Stage 2 bucketed fuel pump kit includes a Walbro 450 (F90000274) fuel pump, capable of supporting up to 575whp on 93 octane gas or 500whp on 100% E85. Even better yet? No wires to cut or splice, nothing to assemble, 100% OEM quality, and drop-in ready! Included in the box: New genuine OEM fuel pump bucket assembly - Pre-assembled with Genuine Walbro 450 pump Includes new fuel sending unit (fuel level sensor) New primary and secondary fuel filters Stage 2 Specifications: Horsepower Supported Pump Gas: ~575whp Horsepower Supported 100% E85: ~500whp Aftermarket EKP Required: No **Some European Spec vehicles may require the re-use of the top hat due to differences in emissions requirements.
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