It is not a boxer engine , it is an opposed piston layout. The opposed piston layout is the most efficient engine layout possible . West is adopting it now in the Achates Power Advanced Combat Engine , while East is using it since the 80s
It doesn't have the exhaust gas forced cooling system . Cyclic rotor fans are bieng installed in the exhaust vanes , to propel air from the cooling system . Tanks suffered from overheating problems .