MKSGR:
 

Interesting statement about the 991 being very sensitive to the fuel quality. Based on your experience: what difference can fuel quality make in terms of 0-300 categories in the 991? 

P.S.: It is extremely unlikely that different fuel can make up for 2.5s in case of the 570, right Smiley My own speculation would rather be a typo or wrong testing procedure/errors Smiley 

In truth the sensitivity to fuel is based on 997 but if anything the 991 electronics will be even more sensitive. Engine dyno testing on 997 turbo showed a 50hp drop on lower octane fuel, the VTG turbo motors seem to run close to knock thresholds....

I agree with you, looks like dodgy testing/typos is more likely. Time will tell Smiley


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997 GT2 2014 3.9 Mezger, 800PS @ 1.2 bar