Stock vs aftermarket Intake
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This is a discussion on Stock vs aftermarket Intake within the Tuning: Electronic Engine Management forums, part of the Tech & Modifying & General Repairs category; Hi guys. Just got the accessport V3. Is it really recommended to change my stock intake to an aftermarket ones? ...

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    Registered User gelmanskiii18's Avatar
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    Stock vs aftermarket Intake

    Hi guys. Just got the accessport V3. Is it really recommended to change my stock intake to an aftermarket ones? And would there be really any power gains changing from stock besides from the turbo sound? Thank you very much!

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    Luke Skywalker Mikie13's Avatar
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    If you go with AEM or the Cobb SF with airbox, you will gain a little bit. The stock intake on the GRs is a little more restrictive than they were on the GDs. If you don't want to spend the money on it, it certainly won't leave too much on the table until you're looking at Stage 2 levels or above.
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    Registered User gelmanskiii18's Avatar
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    Thanks man. Checking the Cobb website about HP and torque gains on Stage1 with stock intake. Said to myself when I got the car that I will leave it stock til the warranty is up. Can't resist the temptation

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    MTM
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    get a SRI.

    I like the sound they make wshhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

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    Registered User gelmanskiii18's Avatar
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    BTW, will it affect if I change the stock air filter say with a K&N or an AEM air filter running Stage 1? Thanks again.

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    zax
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    Quote Originally Posted by gelmanskiii18 View Post
    BTW, will it affect if I change the stock air filter say with a K&N or an AEM air filter running Stage 1? Thanks again.
    In theory, yes.
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    I thought the stock intake was superior until 350-400awhp applications

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    zax
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    Quote Originally Posted by Matt troise View Post
    I thought the stock intake was superior until 350-400awhp applications
    For GD cars and GR STis, the stock intake is adequate to around 350whp. However, the stock intake will become a restriction even to Stage 2 STis.
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    I've seen results where the car lost hp/tq with aftermarket intakes, because they heatsoak

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    Car with <350 WHP: Stock Intake vs KS Tech 73mm CAI - Subaru Impreza WRX STI Forums: IWSTI.com

    ^^ that for reference, good comparison.

    most aftermarket intakes (perrin, aem) are powder coated. KsTech gives you an option to ceramic coat the pipe if your really worried about heat soak

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    Yup

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    Registered User gelmanskiii18's Avatar
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    Minimal or no gains at all on some after market intakes. Guess I'll put a hold on this for the meantime. Sound coming from the cat back is sufficient enough for me coming from stock. BTW, the difference coming from the stock ecu to stage 1 is so much better! Thanks fellas!
    Quote Originally Posted by Matt troise View Post
    I thought the stock intake was superior until 350-400awhp applications

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    This is kinda off topic but, can you put the Sti intake manifold on the wrx or the Sti intercooler? Just curious didn't want to start a new thread


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    zax
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    Quote Originally Posted by Matt troise View Post
    This is kinda off topic but, can you put the Sti intake manifold on the wrx or the Sti intercooler? Just curious didn't want to start a new thread


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    On what car? The STi manifold is exactly the same part as the WRX manifold in USDM 2002-2007 WRX (save for the red finish). In 2008, Subaru went to a different manifold for the WRX with a different TMIC design.
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    The gvb gen 11-14


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