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Registered
Join Date: Jan 2009
Location: The Netherlands
Posts: 156
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Using a higher octane instead of a lower octane should not influence the performance of your 911. The other way around it can when your engine has not been fitted with the harder outlet valves. the Car might pull a little bit less if it is a lower compression car, but certainly not stalling.
Depending on the year of 911 you drive, Porsche's have always been higher octane cars than others, so it would reallty surprise me if this caused any issues.
What year is your car??
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'71 911 T
Original Burgundy
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