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Old 08-25-2017, 07:07 AM   #16
JFP in PA
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Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,261
Quote:
Originally Posted by DrCactus View Post
How do I do this? If problem comes up what needs to be repaired ? Is this a serious issue that I should stop driving car or whats the result if I keep driving
Fuel trims require the use of a Porsche specific scan tool (PST II, PIWIS, Durametric system) and will tell you the exact air/fuel rations for each bank. The one that comes up out of spec tells you what kind of issue (overly rich/overly lean) you have and where it is.
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