2007 sti air filter question
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This is a discussion on 2007 sti air filter question within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I need to replace the air filter on my 2007 STi. I want to keep the stock air box, but ...

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    2007 sti air filter question

    I need to replace the air filter on my 2007 STi. I want to keep the stock air box, but I'm trying to decide whether to get a stock subaru replacement filter or the SPT filter. The SPT catalogue says the filter (Part ST165464S000) is only for 04-06 stis. Will it also fit 07s? I'm assuming it probably will. Will the SPT filter be worth while or should I just stick with the stock one? Thanks

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    Pro Manscaper Mikie13's Avatar
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    Quote Originally Posted by 10101 View Post
    I need to replace the air filter on my 2007 STi. I want to keep the stock air box, but I'm trying to decide whether to get a stock subaru replacement filter or the SPT filter. The SPT catalogue says the filter (Part ST165464S000) is only for 04-06 stis. Will it also fit 07s? I'm assuming it probably will. Will the SPT filter be worth while or should I just stick with the stock one? Thanks
    The Stock one should do you just fine

    The stock airboxes and paper filters have been proven to work best over everything else. SPT, K&N, Green Filters are good, but also cost more.
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    Registered User teflon_jones's Avatar
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    Quote Originally Posted by Mikie13 View Post
    The Stock one should do you just fine

    The stock airboxes and paper filters have been proven to work best over everything else. SPT, K&N, Green Filters are good, but also cost more.
    +1, just stick with the stock paper filter. I don't know how much the dealer charges, but you can get one from Autozone or your local auto parts store for about $10.
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    Moderator Donkey's Avatar
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    Both AFE and Amsoil sell dry flow washable media filters that flow better than paper.
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    Would Never, Ever Say Something Bad About an Admin's Mom SonicWagon's Avatar
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    Quote Originally Posted by Donkey View Post
    Both AFE and Amsoil sell dry flow washable media filters that flow better than paper.
    Link where i can purchase either one that will fit my 03..
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    k&n

    I recommend k&n. It flows better than stock and wont mess up you MAF. Also lasts forever, and is recommended if you do any mods.

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    k&n

    I recommend k&n. It flows better than stock and wont mess up your MAF. Also lasts forever, and is recommended if you do any mods.

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    Quote Originally Posted by chrisp View Post
    I recommend k&n. It flows better than stock and wont mess up your MAF. Also lasts forever, and is recommended if you do any mods.
    And you got this info from where?Any oiled media filter can mess up the MAF sensor.
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    Moderator Donkey's Avatar
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    Quote Originally Posted by SonicWagon View Post
    Link where i can purchase either one that will fit my 03..
    I would have to search just like you.Get the part #'s from the manufacture's website and Google search it.
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    Quote Originally Posted by Donkey View Post
    And you got this info from where?Any oiled media filter can mess up the MAF sensor.
    k&n has charts that show the increased flow on their website. scoobytuner.com reccomends k&n over a CAI or stock filter....for the record. they say that their is a chance that could happen with the MAF, pretty sure I've only seen one person on this forum who had it happen. My 06 sti runs like a dream with a k&n
    Last edited by chrisp; 04-04-2008 at 02:45 PM.

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    Quote Originally Posted by chrisp View Post
    k&n has charts that show the increased flow on their website. scoobytuner.com reccomends k&n over a CAI or stock filter....for the record. they say that their is a chance that could happen with the MAF, pretty sure I've only seen one person on this forum who had it happen. My 06 sti runs like a dream with a k&n
    FYI I run a Green filter.Any cotton mesh filter will flow more than paper at the sacrifice of filtering ability.I was commenting on your statement about not contaminating the MAF sensor.K&N is known for over saturating their filters from the factory.You shouldn't just search the pond when there is an ocean of information available.I have seen K&N's website and the main problem is who cleans and "recharges" the filter?K&n?No the consumer.So thats great that the K&N white collar engineer's follow the intructions to a T,but the blue collar factory worker running the machinery or the consumer that doesn't only use 2 oz's of oil equally distributed on the cotton face is going to have some problems.
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    I've experimented with various intake/filter combinations on other cars I've owned. That's why I want to keep the stock box and either go for the stock filter or the SPT. I don't want an oiled filter because of the issues with the MAF, and in my opinion oiled filters don't filter as well or as consistently as a paper filter. I figure the stock box with a paper filter is just fine for an engine that's 100% stock. I'm considering the SPT filter because it is a paper filter just like stock, but Subaru says it flows better. I don't want to trade filtering ability for flow. I'm assuming Subaru wouldn't offer this filter if it didn't filter pretty well though. Stock will cost me about $20 from the local dealer. The SPT is $60 online. Could someone please tell me if the '06 and '07 STI air filter are interchangeable?

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