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Old 01-06-2016, 05:16 PM   #4
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Join Date: Nov 2013
Location: Emerald City
Posts: 885
Originally Posted by oc-boxster View Post
Mine also seems to stay between 3/4 to 1/4 also. I can put 16 fallons of gas in it and it won't ever go above 3/4. My Indy mechanic has the Porsche tool I believe
My indy uses the Durametric and wasn't able to do the calibration. You need to do it with a PIWIS tool. And it involves draining the tank and adding a precise amount in order to calibrate. If your indy has one that's cool, most don't due to the fact you have to lease them from Porsche to the tune of 17k a month.
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