Quote:
Originally Posted by OldGuyBRZ
Yes, I understand that (see my earlier post). Maybe it's a 'placebo effect', but it seems to me that the engine tends to hesitate slightly with 91 octane when I jump on it, and not so much with the higher mix. Maybe I'm getting crappy gas from Arco(BP), Valero, etc and the 76 100 Octane is better gas. It was your earlier post that actually got me thinking about using the E85. I'm a cheap skate, so I never use a higher octane like some folks that think it's better gas. I put regular in my wife's MDX that calls for premium, haven't heard a knock yet.
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If you're cheap why do you spend more on pointless fuel for your car? The difference between 91 and 93 is vertically immeasurable from a performance standpoint while driving the car. Literally on a stock tuned car the dyno would read the exact same. Maybe 10ths of a HP.
Poor fuel would cause hesitation, the ECU is smart enough to know its being fed 91 and shouldn't hesitate vs. 93.