{HEAD ~ Tests} with a silencer according to the present invention yielded {TAIL ~ a sound pressure level} in free field vehicle noise measurement according to the abovementioned Directive 70/157 EWG of 69 dB 
{ HEAD ~ Tests } with a silencer according to the present invention yielded { TAIL ~ a sound pressure level } in free field vehicle noise measurement according to the abovementioned Directive 70/157 EWG of 69 dB
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH