Electric Exhaust Cutout help
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This is a discussion on Electric Exhaust Cutout help within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; I have an 09 WRX with the SPT catback exhaust. I think its 2.5 diameter at the midpipe. I want ...

  1. #1
    Registered User
    Join Date
    Jan 2017

    Electric Exhaust Cutout help

    I have an 09 WRX with the SPT catback exhaust. I think its 2.5 diameter at the midpipe.

    I want to get an exhuast cutout because i want it louder. Its going on the midpipe past the 02 sensors. Is backpressure and issue at this point? Do I need a tune since its past the sensors? Im sick of reading that half the people say yea backprssure or tune.
    Im looking at these, http://www.protuninglab.com/exco-25-...d=140894047258

    Because they are cheap and im getting one for my friend and his frs because he helped me fix the popping clutch issue.

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  3. #2
    lit fam XJman's Avatar
    Join Date
    Feb 2015
    At work
    Just take the exhaust off at the downpipe. Or shell out actual money and buy a louder exhaust.

    Sent from my SAMSUNG-SM-G935A using Tapatalk
    All? NO ALL!

  4. #3
    Village Idiot McBill's Avatar
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    Sep 2013
    Buckeye State
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    Cutout post rear o2 sensor will not require any changes.
    2011 OBP WRX STi Sedan - click if bored
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  6. #4
    zax is offline
    Super Modulator zax's Avatar
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    No tuning required

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