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    • APR releases VW/Audi EA888 Gen 3 2.0T High Pressure Fuel Pump (HPFP)

      As you likely know direct injection systems get taxed quickly when tuned especially when trying to run ethanol. The holy grail thus far especially in German auto tuning communities is upgraded HPFP's (High Pressure Fuel Pump). Well, APR is delivering an upgraded HPFP for the EA888 Gen 3 2.0 and this is they type of thing that separates the men from the boys.


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      The APR High Pressure Fuel Pump (HPFP) dramatically increases the maximum volume of fuel the HPFP can deliver. In doing so, the direct injection fueling system is capable of satisfying fueling requirements set forth by high horsepower turbocharger systems, such as APRís Stage 3+ EFR7163R ROW Turbocharger System for the MK7 Golf R, S3 and similar vehicles.

      Background

      APR was an OEM supplier of HPFP components to VAG and has operated with a nearly perfect tract record since the program's motorsport backed inception in 2006. With thousands of pumps sold, APR has a wealth of knowledge and manufacturing techniques utilized in the production of critical fueling components with exceptional reliability.

      In the early 2000ís, VAG began supplying engines with a new direct injection technology known as FSI. Unlike conventional engines of the past, fuel is sprayed directly into the cylinders under extreme pressure resulting in increased power with lower consumption rates and fewer emissions. The technology has spread across VAGís entire lineup of modern gasoline engines and is present in the 2.0T EA888 Gen 3.

      How the direct injection fueling system works

      The engineís fueling system can operate to a maximum of over 2,900 psi (200 bar) of pressure to correctly spray and atomize fuel directly into the engineís cylinders. This is in contrast to multi-port injection vehicles of the past which typically operated around 40-60 PSI provided by a low pressure fuel pump. To generate these enormous pressures, the 2.0T EA888 Gen 3ís variable low pressure fuel pump supplies fuel to a cam driven and solenoid fired HPFP which in turn supplies the injectors with fuel.

      A four point cam lobe located on the exhaust camshaft drives the 2.0T EA888 Gen 3ís Hitachi Generation III HPFP. As engine speed increases, so does the pumpís ability to displace a greater volume of fuel per minute. The maximum volume the pump can deliver per revolution on the four point cam lobe is dictated by the stroke length from the cam lobeís lift and bore diameter of the pumpís internal pressurizing cylinder, which is increased when upgrading to an APR HPFP. Itís important to understand, despite the name, APRís HPFP upgrade is not necessarily designed to increase the engineís fuel rail pressure. The primary goal is to increase the volume of available fuel.

      The APR solution

      The engineís fueling system is very capable without modification. However, on vehicles where rail pressure drops below the requested values, the APR HPFP is necessary to keep up with demand. The APR HPFP addresses fueling needs by dramatically increasing the displacement of the HPFP by increasing the bore diameter of the pump's internal pressurizing cylinder. In doing so the fueling system is capable of displacing a higher volume of fuel per minute at every RPM, satisfying fueling needs for various high horsepower applications. This upgrade is only required where suggested by APR.


      APR High Pressure Fuel Pump Components






      The key to APRís reliability comes in part by use of extremely high grade materials and manufacturing techniques. The most critical components within the HPFP are the enlarged plunger and barrel. Each matched set is created using medical grade precision machining techniques deeply quality controlled all within the USA with dimensional tolerances as tight as .00004Ē and geometric tolerances as tight as .00005Ē. The plunger and barrel are created from certified and heat-treated bearing-grade stainless steel and the plunger undergoes a special diamond like coating process for exceptional surfaces hardness and ultra reliable operation. Finally, to prevent float associated with altering the plungerís mass, APR supplies each unit with a properly specified spring.


      Ultimate reliability of this critical component is not easily created using inferior materials and manufacturing techniques. Across all direct injection markets, the community has come to see time after time, cheaper alternatives were met with sometimes irreversible engine damage.

      APR HPFP Testing Machine


      All APR HPFPs are assembled in house under strict assembly guidelines to ensure ultimate reliability and accountability. After construction the APR fuel pump tester plays a critical role in the APRís track record of success. The test stand allows each pump to undergo a critical initial break-in period after creation without risking first operation on a live engine. The stand simulates real world operating conditions while APRís production teams inspect the pump for leaks. Solenoid operation is verified while ensuring the pump is operating within its design specifications. Each pump is then serialized and shipped in a highly protective box to ensure safety during shipping.

      Purchasing Options

      Each HPFP is sold as a rebuild only at this time. You send us your pump. Weíll inspect it, rebuild it, test it, and ship it back!

      MS100143

      $499.99

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      This article was originally published in forum thread: APR 2.0T High Pressure Fuel Pump (HPFP) Now Available started by Arin@APR View original post
      Comments 12 Comments
      1. Torgus's Avatar
        Torgus -
        @Arin@APR make one for the N54 and you can start printing $$$!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Torgus Click here to enlarge
        @Arin@APR make one for the N54 and you can start printing $$$!
        Is this something APR could do? @Arin@APR?
      1. Arin@APR's Avatar
        Arin@APR -
        I'm not sure we've ever looked at one.
      1. Sticky's Avatar
        Sticky -
        Promoted to front page with intro:

        As you likely know direct injection systems get taxed quickly when tuned especially when trying to run ethanol. The holy grail thus far especially in German auto tuning communities is upgraded HPFP's (High Pressure Fuel Pump). Well, APR is delivering an upgraded HPFP for the EA888 Gen 3 2.0 and this is they type of thing that separates the men from the boys.
        Well done Arin and APR.
      1. Arin@APR's Avatar
        Arin@APR -
        Thank you!
      1. Torgus's Avatar
        Torgus -
        Click here to enlarge Originally Posted by Arin@APR Click here to enlarge
        I'm not sure we've ever looked at one.
        If you would look at one I am sure we can get one sent out at no charge. It is literraly the crippling issues for the n54 engines.

        The solution currently is over spinning the stock hpfp and running a secondary stock hpfp in line iirc. The only other solution is port injected fuel into the intake manifold where you lose the DI benefits and go away from stock DME control.

        The 1st person who makes a real upgrade which is not a Frankenstein design will make bank.
      1. Arin@APR's Avatar
        Arin@APR -
        Is the factory pump laser welded shut, or can you disassemble it?
      1. Torgus's Avatar
        Torgus -
        Click here to enlarge Originally Posted by Arin@APR Click here to enlarge
        Is the factory pump laser welded shut, or can you disassemble it?
        https://www.bimmerboost.com/showthre...)-HPFP-upgrade

        So far no one has been able to offer a real upgraded solution.
      1. Arin@APR's Avatar
        Arin@APR -
        Who makes the pump?
      1. Torgus's Avatar
        Torgus -
        Click here to enlarge Originally Posted by Arin@APR Click here to enlarge
        Who makes the pump?
        BMW?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Arin@APR Click here to enlarge
        Who makes the pump?
        I'll get pumps sent to you if you like. Doubt you guys are interested though. Might be a cool venture for the Dinan brand...
      1. Arin@APR's Avatar
        Arin@APR -
        I spoke to one of our engineers that works on these and apparently we already looked into one of these years ago. It's not like the pumps we're working with. It's possible we could do one, but just can't see taking away resources from other projects.