Misfire due to failed mass air flow sensor or failed purge valve on Porsche Boxster

A failing mass air flow sensor or EVAP purge valve can cause misfire issues.
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Average mileage: 70,117 (55,000–85,234)
14 model years affected: 1997, 1998, 1999, 2000, more2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
17 people reported this problem
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Viewing 1 - 2 of 2 problem details
2001 Porsche Boxster 85,234 mi,
Check engine light, white smoke from exhaust during cold starts, rotten egg or fuel smell from the exhaust, clapping sound or misfire sound from engine, poor performance when engine is hot, and slight hesitation during accelerations. Replace the Mass Air Flow sensor (MAF) and the car was fine.
1999 Porsche Boxster 55,000 mi,
Check engine light and poor performance. Replaced MAF sensor and car is fine.