The Subaru Impreza does not have a fuel pump inertia switch. If you are having fuel issues it could be the fuel pump relay or fuel pump.
The 2003 Subaru Impreza runs on regular unleaded.
The 2014 Subaru Impreza runs on regular unleaded.
The 2008 Subaru Impreza runs on regular unleaded.
The 2001 Subaru Impreza runs on regular unleaded.
The 2010 Subaru Impreza runs on regular unleaded.
The 2009 Subaru Impreza runs on regular unleaded.
The 2013 Subaru Impreza runs on regular unleaded.
The 2002 Subaru Impreza runs on regular unleaded.
The 2012 Subaru Impreza runs on regular unleaded.
The 2005 Subaru Impreza runs on regular unleaded.
The 2011 Subaru Impreza runs on regular unleaded.