I can't fathom why there would be any EMS changes, as the valves are only opened on idle to quieten the diesel rattle (by delaying ignition in the reduced oxygen environment) and on light throttle cruising to reduce emisisons, as documented in the WSM. Its not as though they are opened whilst the engine is working hard.


 
						
					 
					
					 
				
				
				
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					 Originally Posted by Catmatt
 Originally Posted by Catmatt
					

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