I own Audi A6 2.7T S-line 265HP, 280lb-ft, shipped from USA. I use for it 91 AKI as i read on pump and that's the minimum octane rating i can use in it.Tomorrow i'm going to fill 94-95 AKI the same 98 Super European Unleaded.Acceleration feels quite fast, 0-60mp/h is about 6.9 7.0 seconds,but in my opinion on higher octane gasoline it would be a bit faster,How do you think will higher gasoline have an influence upon acceleration?? Can I somehow increase or decrease the turbo boost on 2.7T engine without chip modification??coz i've heard somewhere,but not sure in it's reality that i can regulate turbo boost.

 

I have not noticed any difference in performance or gas mileage when using 89, 91, or 93 octane gas. The higher octane just prevents pre-ignition (ping), and does not per se generate more power. As far as increasing boost, I believe the only way is to chip or re-program the ECU (which is what a chip essentially is). Your 0-100 kph times seem reasonable for the tip and a 3900 lb vehicle.

 

Pg is correct higher octane will not increase your power. Just stick with what's recommended. unless you're running high boost and running it hard for extended lengths of time then it's time to move up

 

Thank you! but what 0-60mp/h times approximately do you have on A6 2.7T or the same S-line models? If i believe in internet tests 0-60mp/h is 6.3 -6.5 seconds, thats worry me maybe my car has some problem,Gasoline isn't very high quality in my country,I'm sure in it 100% in comparison with US or europe. I've driven many cars in my country on different gas, and somehow could feel the difference in acceleration, My car as i said above feel fast,but not 6.3 seconds thats why i ask you about your 0-60 times. thanks!