STI in 4th gear at 4000rpm issue
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This is a discussion on STI in 4th gear at 4000rpm issue within the STi Technical Forum forums, part of the Tech & Modifying & General Repairs category; Hi All, I have noticed something on my new my15 sti recently and wanted to know if anyone else is ...

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    STI in 4th gear at 4000rpm issue

    Hi All,

    I have noticed something on my new my15 sti recently and wanted to know if anyone else is having the same issue...

    First off my sti is in Sport Sharp mode and in 4th gear at around 2000 - 2500rpm and when i put the foot down and hit 4000rpm it gets a pretty violent kick back and i have no idea what it is. Almost like a limiter but really harsh / or a cut of fuel. Have no idea?

    Any help would be appreciated.

    Thanks! Theo

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    Registered User nsibanez's Avatar
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    There is close to no information on what's happening so it'll be near impossible to help, based off of what's provided
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    What else are you after?

    Thats half the problem is that its almost occurring for no reason... No warning lights, no smells, nothing...

    If i could give more detail i would.

    Was hoping someone else may have had this issue and knew what was causing it.

  5. #4
    Master Baiter EJ257's Avatar
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    The ECU can cut fuel in an overboost situation. Take it to a dealer...
    2005 WRX STi (Mods | Virtual Dyno)

    Resident Tuner @ WTF Tuning

    "Never trust anything that bleeds for a week and lives ..."

    UNYSOC

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    Registered User nsibanez's Avatar
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    Most times when the ecu cuts boost from an over boost it throws the range a performance code as well. We also don't know what mods you have, when the issue started (after installing something or doing some bit of work, etc )


    If anything you have a warranty. Use it
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  7. #6
    Master Baiter EJ257's Avatar
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    Quote Originally Posted by nsibanez
    Most times when the ecu cuts boost from an over boost it throws the range a performance code as well. We also don't know what mods you have, when the issue started (after installing something or doing some bit of work, etc )
    Not always...

    There is a separate fuel cut and DTC trigger value. It depends on the way the map is setup.
    2005 WRX STi (Mods | Virtual Dyno)

    Resident Tuner @ WTF Tuning

    "Never trust anything that bleeds for a week and lives ..."

    UNYSOC

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    Car is stock (no mods)... I will visit the dealer during the week and let you guys know what the outcome is.

  9. #8
    Registered User nsibanez's Avatar
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    Quote Originally Posted by EJ257 View Post
    Not always...

    There is a separate fuel cut and DTC trigger value. It depends on the way the map is setup.
    Just speaking out of experience. On the stock map in dead middle of summer in CT (decent humidity and anywhere from 80s to 90s) I'd hit it every now and then (also before my inlet tore) and every time I threw the code. Also only happened in 4th mid range
    Stinkeye member 520

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