Chris NottEM Tuning
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  1. #1
    Els
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    Mapped car on normal Unleaded?

    Chaps,

    My car has been running a bit iffy the last week. (Bit hesitant, feels down on power and doesn't feel as if its coming on full boost all the way through the revs, just seems limp!)

    I have thought about MAF's and coilpacks but it also occurred to me that it started the day I filled up with fuel.

    I always run it on high octane fuel, but I had no where to go so the normal Texaco stuff was put in!

    Do you think this could play a part in the crap running on a mapped car? (MTM Map)
    Imola Yellow S3

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  3. #2
    voorhees's Avatar
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    nope

  4. #3
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    your ECU will back the timing off and reduce the power to account for the poor grade fuel, there shouldnt be any long term effects from it

  5. #4
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    agreed, i went back to normal unleaded as couldnt see the difference, then tested with and without and it does exactly what Mark says
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