The intake control system includes {HEAD ~ an intake valve} that allows {TAIL ~ a variable amount} of air into an air cleaner depending on vehicle speed 
allows
The intake control system includes { HEAD ~ an intake valve } that allows { TAIL ~ a variable amount } of air into an air cleaner depending on vehicle speed
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH