Different Octane Ratings
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This is a discussion on Different Octane Ratings within the Comparison: WRX vs World forums, part of the Community - Meet other Enthusiasts category; i was reading that post about that kid (jester) that is nervous about buying a WRX and there was a ...

  1. #1
    Registered User daiviouth's Avatar
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    Different Octane Ratings

    i was reading that post about that kid (jester) that is nervous about buying a WRX and there was a link to autoweb car test that said "(to suit our relatively low grade 98-octane fuel)"

    Im from Illinois and the highest normal, non-race fuel octane level we can get "premium" is 93 octane.

    Does this vary from state to state? or what? i know a place to get 110 octane but im worried it might do damage to my engine.

    Thanks again guys! (and gals)

    - M a t t -
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    Registered User Marcolus's Avatar
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    generally gas an the states is piss poor quality in regards to elsewhere in the world(pumpgas)

    if you want to run some race fuel make sure it is not leaded (if you still are running cats) and if you arent running cats then leaded fuel can be used.

    if you just want to increase the desired octane effect/rating get some fuel grade ethanol and mix it in in 10% concentration with the normal fuel. Or even the N.O.S octane boosters are decent.

    in regards to octane pupmp gas variants yeah, it does varies, like people in cali got screwed over with having only 91 as the highest available at the pumps, locally i can get 94 but i have a shop righ down the street from me, with pleny leaded/unleaded CAM2
    Edge of The Blade

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    Registered User gryphon's Avatar
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    The rest of the world uses RON octane rating. We use RON+MON/2 which is more accurate.

    If you want to boost your octane cheaply, go to a paint store and by Toluene. Add a gallon to a tank.
    2002 Subaru Impreza WRX
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    Thinking Man's Engine tan's Avatar
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    Research Octane Number is derived from "low engine load" testing.

    Motor Octane Number is derived from high engine load testing.

    Obviously RON will net higher numbers. Based on VW owner's manual, I can conclude that RON tend to be four points higher than AKI (Anti Knock Index, RON+MON/2)

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    -jasyn

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    No cats and you still should not run leaded. i was told it can screw up your 02 sensor(s)
    Don't flame. Be nice

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    [QUOTE]Originally posted by Marcolus
    [B]generally gas an the states is piss poor quality in regards to elsewhere in the world(pumpgas)

    if you want to run some race fuel make sure it is not leaded (if you still are running cats) and if you arent running cats then leaded fuel can be used.

    if you just want to increase the desired octane effect/rating get some fuel grade ethanol and mix it in in 10% concentration with the normal fuel. Or even the N.O.S octane boosters are decent.

    This might be a little off subject. I read in I think Sport Compact about the N.O.S. octane booster. They added into a Honda and did a dyno run. They got 5hp more for like $3.50.

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    [QUOTE]Originally posted by play_amg
    [B]
    Originally posted by Marcolus
    This might be a little off subject. I read in I think Sport Compact about the N.O.S. octane booster. They added into a Honda and did a dyno run. They got 5hp more for like $3.50.
    Yeah, but did it add any torque? Who cares about HP: HP sells cars, torque wins races. Honda sucks. I am so mad at them for lying about the capabilities of their cars by promoting HP numbers when they should be honest and tell everyone the truth: HP MAKES NO DIFFERENCE, IT IS ALL ABOUT TORQUE!!

    Man are some people stupid! (not you play_amg, just everyone who owns a Honda).
    2002 RSX Type S
    Anyone want to buy my car?

  10. #9
    Registered User daiviouth's Avatar
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    Smile

    Wow, RSXsucks. i was very surprised to see someone else that actually knew something about hp vs. troque; and knew the saying. unfortuanately you forgot that hp is derived from an equation that involves torque. so assuming that the time stays constant and hp is increase then torque must also be increased. someone correct me if i am wrong but this is what i have been lead to believe.

    soon to come? dinan stg 1 software. adds 8hp and 20lbs of torque. 345lb @ 3500 mmmm. HP sells cars; low end torque, to be exact, wins races.
    1997 Toyota Supra TT 6-speed
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