The exhaust system may further have a plurality of {HEAD ~ dosers} associated with the diffuser and configured to inject fuel into {TAIL ~ the diffuser} 
The exhaust system may further have a plurality of { HEAD ~ dosers } associated with the diffuser and configured to inject fuel into { TAIL ~ the diffuser }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL