Quote:
Originally Posted by AZFA20
I have about 10 years of constant testing AZ gas under my belt and I can pretty confidently say that for the money QT is the most consistent in ethanol and knock suppression on 91. E85 I pretty much solely get it from Chevron but really only because they are the majority stakeholder on E85 here in the valley. I have gotten good gas from others too obviously but QT has by far been the most consistent which is most important imo. I have never seen anything over 9% ethanol from them and its nearly always 8%. More importantly though is the knock suppression specifically under boost.
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I know that for the FI guys, folks like Clark Turner (almost a god in the EJ-tuning world, according to some... easy way to start a fight in SWIC is to ask who to get tuned from), have said that they can tell when someone has been running chevron in an FI'd subie, b/c of the power loss. He recommends QT for them. So I did, when I still had the STI. Figured I might as well stick with them as best I could when I got the BRZ.
I do get consistent gas mileage from QT gas (steady mid to upper 27 mpg measured average, 29.x as read by the ECU), so I figure that's indicative of consistent E-content as well. It seems to always stay there, as long as I don't excessively high-rev the car (that is, stay in cruise revs when cruising, and whatever I care to rev to when I'm on side streets or passing), which I like. That's 10mpg more than when I would utterly granny drive the STI. More fun with consistently higher mpg's. I LOVE this car! Then again, I wasn't getting 27mpg when I first got this car. More like 24-25 mpg with those driving habits. So, thanks @
nelsmar. That's his road tune (over about 35 iterations) that's giving me that performance.