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Old 05-09-2019, 07:55 AM   #3
Benitom
1998 Boxster Owner
 
Join Date: Mar 2015
Location: Alviso, CA
Posts: 231
I've owned my 98 for about 3.5 years now and I would say it's normal. Seems obvious but check if your air filter is dirty. If really dirty the car does what you are describing. When my car it up to normal operating temp if purs when idle with no shaking.
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