Any ideas what can cause timing retard? w210 amg E55
The car has no fault codes in memory.
Here are my engine data readings.
MAF at WOT - 950kg/h
Ignition advance at WOT 19-20*
Ignition advance at idle 7-9*
I checked the ignition advance of few other cars with same engine and all of them show
Ingition advance at WOT 27-29*
ignition advance at idle - 14-15*


