The engine may include {HEAD ~ an intake manifold pressure sensor} configured to produce {TAIL ~ the measured boost pressure value} and an ambient pressure sensor 
The engine may include { HEAD ~ an intake manifold pressure sensor } configured to produce { TAIL ~ the measured boost pressure value } and an ambient pressure sensor
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH