RON 91 gas on a wrx
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This is a discussion on RON 91 gas on a wrx within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Can this work on a stock car. I have been reading some other posts but I am not quite sure ...

  1. #1
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    RON 91 gas on a wrx

    Can this work on a stock car. I have been reading some other posts but I am not quite sure if they are talking about RON or PON

    Subaru Impreza WRX Sedan (2002)
    wrx mpg- what's everyone averaging? - NASIOC
    91 octane !!!!! its what i only have - Subaru WRX Forum: WRX Forums
    How many mpg on 91 octane with/without tunes?

    Can Super (92 RON) work on a Singapore 02 WRX?

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  3. #2
    The Default One SeattleJeremy's Avatar
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    In general should be using the highest rated RON available in your turbo Subaru. Is 96 or higher RON available in Singapore?

    The websites you linked to are US based. The US uses the AKI standard, which is different than the RON standard.
    Please read post number 8 in this thread to see the conversions.
    Japan Octane Ratings

    The computer (ECU) is tuned from the factory to run on 96 RON or 91 AKI.

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    Well inside my fuel lid cover it says "unleaded Super only"

  5. #4
    The Default One SeattleJeremy's Avatar
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    Is 96, 97 or 98 RON available in Singapore?

    If not then I suggest getting the car tuned to run on 92RON. Running 92RON in a car tuned for 96+ will make the engine knock, and over time will lead to engine failure.

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