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