Actually turning the ignition on with out starting the engine only reinitializes them , and should do the trick . You can hear a high pitch whine when it's re initialing ... To recalibrate you need diagnostic software to calibrate . You shouldnt need to recalibrate for removal of valve covers . Unless you had an existing issue before .
seams like your right. its something to do with your valvetronic.
Make sure the connectors are on the eccentric sensor tightly. also make sure its connected to the valvetronic motors correctly. make sure the male connectors dont have a bent pin and make sure all the pins inside the female connectors haven't moved.
try disconnecting the motors and turning on then plugging again.
and well really you should find out how to actuate the motors and reinitialize them on INPA.
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