GAS - High Octane Truth or Myth? - Page 7
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This is a discussion on GAS - High Octane Truth or Myth? within the Everyday Impreza Talk forums, part of the Community - Meet other Enthusiasts category; Cooler intake charge retards detonation - bad advice though because you get more boost. Also, they say you can run ...

  1. #91
    Admiral Ackbar the 1st mycologist's Avatar
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    Oct 2005
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    Cooler intake charge retards detonation - bad advice though because you get more boost.

    Also, they say you can run lower octane at high elevation - I have never seen it work in a boosted impreza though.
    "From a little spark may burst a mighty flame." - Dante
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  3. #92
    and the Funky Bunch Calvinball's Avatar
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    Jan 2012
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    Thanks for the clarification guys
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  4. #93
    Registered User Venom351R's Avatar
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    Oct 2010
    Good input thanks. I had mostly been running 89 but I will definitely start to run 91 after reding this. The savings at the pump is not worth it plus I thought I was ok at 89 but if the computer is still compensating then 91 it is
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  6. #94
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    Dec 2009
    Northern New Jersey
    I used to have a firebird and camaro 6cyl.. and always used 94 sunoco and when i got the WRX stayed with it.... with gas prices going up i decided to drop the octane.. big mistake.. i can't prove "plus" was the problem but I never had an issue with the emmisisons until recently.. (in another thread i have detailed that).. anyway.. i noticed that with normal driving i went down to less than 300 miles on a tank (not scientific but generally consistant).. where as on super i always got over 320miles on a tank.. my last trip all highway for about 400 miles on shell v-power 93 and I got 396 miles on a single tank even driving over the west virginia mountains.. on the way back about 365 miles.. so im pretty sure that it makes a difference. now with the gov wanting to go to 15% ethanol.. i'm wondering if it will revert back to less mileage..
    Last edited by ChadU; 05-21-2012 at 07:03 PM.

  7. #95
    Super Moderator (Actually a SuperSpy) SD_GR's Avatar
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    I get 400+ miles per rank on 91.
    The world breaks everyone and afterward many are strong in the broken places. But those that will not break it kills. It kills the very good and the very gentle and the very brave impartially. If you are none of these you can be sure it will kill you too but there will be no special hurry. Ernest Hemingway, A Farewell to Arms, 1929
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  8. #96
    Registered User lytlec's Avatar
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    I get 220 on 93.
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  9. #97
    Registered User UEDan's Avatar
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    Quote Originally Posted by SD_GR View Post
    I get 400+ miles per rank on 91.
    Do you do driving lessons?

  10. #98
    Pro Manscaper Mikie13's Avatar
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    Quote Originally Posted by UEDan View Post
    Do you do driving lessons?

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