AP Stage 1 question
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This is a discussion on AP Stage 1 question within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; ``I just broke 1000 miles today and had the Cobb SF w /air box installed along with Invidia Q300 catback ...

  1. #1
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    AP Stage 1 question

    ``I just broke 1000 miles today and had the Cobb SF w /air box installed along with Invidia Q300 catback and Process West TMIC. My question is this, on the cobb website it states that target boost is 17.5PSI +/-1.5~ i was data logging and my boost hit 18.4, is that too high? when I went to targeted boost and logged it said 27+ PSI. Why is my target boost so high? I'm afraid of overboosting / hurting my engine I'm researching this topic as we speak on Cobb but if anyone has any knowledge on the matter please let me know.

    Thanks,
    Chris-

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  3. #2
    Master Baiter EJ257's Avatar
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    18.4 = 17.5+.9

    .9 < 1.5

    You're fine.

    As for target boost, it could be referring to manifold + atmospheric pressure, where when you're reading boost, you're reading the MAP sensor.
    2005 WRX STi (Mods | Virtual Dyno)

    Resident Tuner @ WTF Tuning, LLC

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

    UNYSOC

  4. #3
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    ahh, Thanks. I was just a little concerned especially after I did the intake the car sounds like a beast now. Sounds like I put a BOV on it when I open her up

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