The lower response speed is maintained effective even if {HEAD ~ the engine temperature} subsequently falls below {TAIL ~ the maximum engine temperature} 
subsequently falls below
The lower response speed is maintained effective even if { HEAD ~ the engine temperature } subsequently falls below { TAIL ~ the maximum engine temperature }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL