Really depends on āwhereā the ācrossoverā is placed. H belongs as far back (within reason of the center section) as possible and x belongs as far forward as possible. H in the rear will help the transition for around the axle. X up front to help scavenging āCrossoverā in the middle more sound...
At this point in time, it is my understanding, the default emission setting is required during startup and is unable to be modified. There are various āfaultsā and conditions that will prevent it from functioning, even when enabled (in fact there is an active/paused recall for the very...