• Stage 1 and Stage 2 BMW B58/B58TU HPFP (High Pressure Fuel Pump) upgrades from Dorch Engineering

      We have another contender in the BMW HPFP (High Pressure Fuel Pump) game. In all honesty BimmerBoost is not familiar with Dorch Engineering but a few tuners behind the scenes have mentioned great success in running their pumps namely in B58 applications.

      This is a plug and plug and play solution good for up to 600 rear wheel horsepower. The factory DME controls the pump:

      Quote Originally Posted by Dorch Engineering
      This is a complete plug-and-play kit to support up to 600whp (this number can vary quite a bit depending on tuning strategy and the blend of ethanol*). There’s no cutting, no bending, no crimping, etc. This kit drops right in with full control from the DME, just like the OEM pump. All of the safety and sophistication of the stock DME remain in place.
      Dorch Engineering includes this chart to detail the pump differences:

      B58 HPFP Flow Capacities

      The table below serves as a reference for maximum fuel flow in cubic centimeters per camshaft revolution for various B58 fuel pump options. These calculations are based on the B58 cam lobe. Each engine will have varying fuel flow capacities depending on the lift and number of lobes on the camshaft.

      Pump Model Fuel Flow (cc/rev)
      HDP5 Evo (Stock B58) .954
      HDP6 (Stock B58TU) 1.178
      Dorch Engineering Stage 1 1.299
      Dorch Engineering Stage 2 1.558

      To take full advantage of the upgraded pump you will need software from MHD or BM3.

      Great to have more competition in the BMW direct injection fueling sector.

      Kit Contents:

      • HPFP w/ Hardware
      • High Pressure Line
      • Quick Connect Low Pressure Line
      • Low Pressure Line Bracket
      • Plug-n-Play Adapter Harness

      Kit Fitment:
      F20 – 140i, 140xi
      F21 – 140i, 140xi
      F22 – 240i, 240xi
      F30 – 340i, 340xi
      F31 – 340i, 340xi
      F32 – 440i, 440xi
      G30 – 540i, 540xi

      *Full E85 is tuner-dependent, but we typically recommend our Stage 2 HPFP Upgrade kits

      This article was originally published in forum thread: Stage 1 and Stage 2 BMW B58/B58TU HPFP (High Pressure Fuel Pump) upgrades from Dorch Engineering started by Sticky View original post