I don't know that the hose is anything more than plain vac hose - somebody confirm that for me. In the mean time, the pressure buildup that caused the hose to pop off suggests that you may have a problem with the DPFE. Put the hose on the current one to check that it's OK, but a replacement should be under $40 - even at the dealer.
In the meantime, before spending money on a DPFE, try doing
TB cleaning. Almost free, quite effective, & easy.
Enjoy!
