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This is a discussion on Another Newby within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; Just bought my first Sub, a 2010 WRX 4-door, went right to the Sage II mods after a quick breakin. ...

  1. #1
    Registered User gearmac's Avatar
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    Another Newby

    Just bought my first Sub, a 2010 WRX 4-door, went right to the Sage II mods after a quick breakin. After doing some data logging with my accessport; the fact that the injector duty cycle hits 90% early in a full throttle run (which I've read is max??), and boost is reduced and wastegate duty cycle increases; it seems like there might be a little room for a fuel system upgrade before spending the money for the stage III. Can anyone tell the stock injector size and what fuel pressure is regulated at? Are there any good tech manuels out there without sending all the cash on the factory ones? I've got a ton more question, but better stop here for now.

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  3. #2
    Master Baiter EJ257's Avatar
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    OEM injectors will flow ~565cc; not sure about fuel pressure.
    2005 WRX STi (Mods | Virtual Dyno)

    Resident Tuner @ WTF Tuning, LLC

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

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