Mazda DISI Complete High Pressure Fuel Pump





The HPFP Upgrade high pressure fuel pump increases the volume of fuel from stock by over 40%. To achieve this we modifying some key internal parts within the pump. Changing these components requires precision machining, enlargement of the pump and piston, and precision measuring components. Using inferior components on this critical part can lead to many problems. We only use certified H13 tool steel for our pumps, the final finish of the sleeve to piston surface is measured in RA then a final check is done in RZ (mirror like finish). This process allows for final fitment that goes to the .000005 of an inch. All our pump internals are nitride treated then cooled in a nitrogen vacuum chamber. This has been proven to give the best material treatment available for the H13 tool steel and the process is certified to meet the specifications for the high pressure pump internals. All parts are then hand fit (with protective gloves) and measured with air gauges to verify you are getting "matched" sets with every pump or pump internal. The HPFP Upgrade fuel pump tester is a key element in pump production process. With this fuel pump tester we can perform several tests to verify pump operational parameters:

  • Peak Flow vs RPM
  • Peak Pressure vs RPM
  • Chart RPM and pressure curves
  • Chart RPM and flow curves
  • Minimum operational pressure
  • Pump solenoid operation
  • Pump seals are good
  • Fuel temperature at high pressure discharge point
  • Low pressure feed pump psi


High Pressure Fuel Pump Comparison

 

The tester allows for critical break in of the new pump, performance test to be ran and ensures a lifetime of worry free miles for any HPFP Upgrade pump that we offer. We are the only company that offers all the above items with every pump assembly. Some applications will need to be tuned for the higher output of the HPFP Upgrade, talk with your tuner about what will best meet the needs of your build. HPFP Upgrade has been building and testing high pressure pumps since 2008, we have accumulated 100's of thousands of miles on the road and 1000's of hours on the pump tester verifying that you are getting the quality and products that our customers demand. Take a look at the options we have for your vehicle application and buy with confidence in knowing that you are getting the best and tested high pressure pump on the market! All pumps come with a five year warranty after the date of purchase, or lifetime of the original owner.

Stage 1:

Mazda 2.3 DISI High Pressure Fuel Pumps are brand new OEM stock, we replace the piston and sleeve in a clean room, run them on the HPFP Upgrade pump test stand, send out run sheet verifying proper pump operation.

Stage 2:

Mazda 2.3 DISI High Pressure Fuel Pumps are brand new OEM stock, we replace the piston and sleeve, modify the factory feed supply, and machine the discharge check valve, assemble in a clean room, run them on the HPFP Upgrade pump test stand, send out run sheet verifying proper pump operation. The S2 pumps support an additional 18 to 22% flow over the standard high pressure pump upgrade.



Product Added: June 25, 2011
Part Number: hpfp00003