In some markets, the EA888.3 series of engines are equipped with port direct injection (DI) and multiport injection (MPI). NA cars only include DI. In order to run larger turbos or increase the capability of the fuel system to run alternative fuels (e85) in a performance scenario, the MPI system can be added.
Continental didn't intend to use the MPI system in the way we use it (under full load, at high RPM, with big injectors) so when enabling the native MPI we also must change the logic that controls it. MPI, DI, and the way they work together are dictated through the use of [[Combustion_Modes]] (along with other things).
== Combustion Modes ==