Several months ago we posted a problem with our 912is sport. The engine reached peak RPM around 5200 at about 60% throttle travel with MAP about 29" at the same time and more throttle caused rough running. BUDS diagnostic said lack of air. We finally located the problem, sharing in case others have the same issue and its was a collapsed exhaust baffle restricting exhaust gas and back pressure restricting airflow in. 

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