The change from the M119 wasn't about emissions. The engines are/were in the same emission class. In fact the 4 valve design didn't NEED an EGR valve(ie: 1996 & later). The M112/113 definitly need the EGR valve to lower NOx
The only reason was $$$$ & they are saving 50% over the cost of the M119.
The M119 is a real engine!!
MERCEDES Benz Master Guild Technician (6 TIMES)
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190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)