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Old 04-07-2018, 04:59 PM   #2
radar1972
 
Drives: 2012 IOM SS/RS
Join Date: Sep 2017
Location: Georgia
Posts: 92
I'm sure the real experts here will chime in, but to me it sounds like it is what some call the 'flutter' of the AFM (Active Fuel Management) system as it switches back and forth between 8-cylinder and 4-cylinder operation.
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