Ford Focus Forum, Ford Focus ST Forum - View Single Post - anyone using premium gas ?
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Old 05-14-2012, 01:39 PM   #77
gtp2focus
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Quote:
Originally Posted by kylesvt720 View Post
If you guys want this settled. Get a car, and a dyno. Run it almost to E, fill with a gallon or two of regular. Dyno it, then drive it around until it's about to be empty, fill with Premium, re dyno, (same day) and see if there is a gain.
That wouldn't work, you'd have to reset the ecu and let it adjust. Maybe a tank of regular, reset the ecu, and then a tank of premium.
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