Tuning Question.
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This is a discussion on Tuning Question. within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Quite honestly i dont know if this is the correct area for tuning questions but i will go ahead anyways. ...

  1. #1
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    Tuning Question.

    Quite honestly i dont know if this is the correct area for tuning questions but i will go ahead anyways.
    I bought a 2003 wrx recently and it drives very well for 180k miles. However the previous owner thew on some minor mods.
    These mods include:
    3 inch turboback exhaust.
    an aftermarket larger intercooler.
    COBB cold air intake
    Unknown larger BOV

    I was wondering however, that since the car has not been tuned with these mods, should i be hesitant when driving the car hard. Even with that said, do i need a tune? I have access to free tuning, but im wondering how important it is, and how fast i should get it done.

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  3. #2
    Sammich Makin' Pwincess wrxtreme06's Avatar
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    the 02-03 models can get away with basic modifications without a tune, however you will not see the power benefits of said modifications until a tune is done.

    my suggestion:

    - replace the uppipe if it hasnt already been replaced with a catless model
    - remove the BOV & replace with OEM unit
    - get a tune

    desiree
    your friendly, neighborhood subaru girl
    abbigale : 06 impreza wrx tr: cobb stage II
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    wingl3ss @ll!ance #17 // lvl 80 N.E.R.D.

  4. #3
    MAINEiac 11blackSTi's Avatar
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    If you have access to free (and reputable) tuning, then why not? The car will definitely run better with a tune regardless of if you need it.

    But for your year, you don't necessarily need a tune for the exhaust or intercooler. I would go for the tune just because the intake is on there. Also, if the BOV is venting to atmosphere i would replace that with a fully recirculating one.

    Here are a few helpful links.

    First Modifications - what to do and not to do

    Intake FAQ

    "The BIG BOV thread" (Where all bov question threads get merged)

    Yes, you need an EM for engine mods

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