A Porsche Carrera 4S made 2014 MA engine with 15 thousands miles,the owner discribed that no chagning voice of the sport exhaust.And technicians found the valve of rear muffler keep closed,and no chagning voice of the sport exhaust.This article talk about topic of how to solved Porsche Carrera 4S sport exhaust trouble.
Diagnosis of Trouble:
Here comes a structural schematic diagram of Porsche sport exhaust system,show as below:
1.Front muffler
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