The 2.0T EA888 Gen 3 engine uses a returnless, pulse width modulated (PWM) controlled, an in-tank low-pressure fuel pump that feeds a cam-driven high-pressure fuel pump (HPFP), and gasoline direct injection (GDI) injectors. The European models also include multi-port injection (MPI) injectors, which are only used for emissions reasons under light driving. The factory fuelling system maxes out at below APR Stage III+ power levels before the headroom for safety and longevity decreases dramatically.
To support higher power levels, the APR Fuelling system upgrades several components. First, the LPFP is upgraded to a larger, 305 LPH, mounted inside the factory fuel basket with the included APR mounting hardware. At its inception, the pump is the largest readily available pump of its kind, both physically compatible with the factory fuel basket, and fully compatible with the factory PWM fuel pump controller without additional controllers.