First upgrade for this hpfp on the market,period!
The EA839 OEM maximum operating pressure is 200 bar or just over .
 At stock power levels, this is adequate for proper atomization and fuel mass delivery into the cylinders. With increased power demands through tuning and hardware upgrades, the fuel system is pushed to its limits to provide the requested fuel mass. With VIS’s high pressure fuel pump, your tuner has the capability to increase fuel pressure levels to beyond 240 bar)!
 
We use brand-new Hitachi/OEM units as cores with custom internal components. Each matched set of piston and sleeve is precision machined, ground to strict dimensional tolerances.
 
This eliminates the need for a special tool, bearing separator, and hydraulic press during the installation process saving you both time and money while retaining your original fuel pump for when you want to move on to the next project!