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Thread: 04 STI vs 06 STI? Major/minor differences?

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    Basic Member Trosz's Avatar

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    04 STI vs 06 STI? Major/minor differences?

    Just hoping someone may have a lead on a thread that compares the 2 years and what was switched up? If in fact there is any real major differences besides being the Hawkeye style, any info appreciated


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    On a quest of STi erudition! Alin's Avatar

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    Re: 04 STI vs 06 STI? Major/minor differences?

    I actually took the time and went through the differences between the engines and transmissions over the years. That information is in these threads:

    https://www.igotasti.com/vBforum/thr...(2004-Present)
    https://www.igotasti.com/vBforum/thr...-(2004-Present)

    Also, this website is one of the sources I used, and they go through most, if not all, of the details changed from year to year:

    http://www.cars101.com/subaru/impreza/wrxsti2004.html
    http://www.cars101.com/subaru/impreza/wrxsti2006.html


    Quote Originally Posted by Batmobile_Engage View Post
    It doesn't have to have a nut on the outside. Many are short, but I often try to find long ones that sometimes have a bend in them.
    Quote Originally Posted by Batmobile_Engage View Post
    I don't need another reason to dig through 4 layers of clothes to whip the sea monster out in 0 degree weather.

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    Track Monkey Grinder34's Avatar

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    Re: 04 STI vs 06 STI? Major/minor differences?

    Quote Originally Posted by Alin View Post
    I actually took the time and went through the differences between the engines and transmissions over the years. That information is in these threads:

    https://www.igotasti.com/vBforum/thr...(2004-Present)
    https://www.igotasti.com/vBforum/thr...-(2004-Present)

    Also, this website is one of the sources I used, and they go through most, if not all, of the details changed from year to year:

    http://www.cars101.com/subaru/impreza/wrxsti2004.html
    http://www.cars101.com/subaru/impreza/wrxsti2006.html
    Those links will serve you well.

    Off the top of my head the big ones are :
    the wheel bolt pattern (the 04 has the same 5x100 as the wrx, usually STI is different at 5x114.3),
    obviously the whole exterior styling package (hawkeye vs blobeye, tail lights, hood scoop size, interior controls, etc...)
    Some minor chassis stiffening
    I think the 04 and the 06 may have different internals for the rear diff. This is mostly inconsequential except for what fluid you put in them
    Minor engine-bay reorganization?


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    My non-subaru journal here!

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    Basic Member Trosz's Avatar

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    04 STI vs 06 STI? Major/minor differences?



    That’s a pic of my white 04 the sons blue 04 and my newest pony the blue 06
    Sent from my iPhone using Tapatalk


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    On a quest of STi erudition! Alin's Avatar

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    Re: 04 STI vs 06 STI? Major/minor differences?

    I'm glad to see that picture, and that you have 3 Subies!


    Quote Originally Posted by Batmobile_Engage View Post
    It doesn't have to have a nut on the outside. Many are short, but I often try to find long ones that sometimes have a bend in them.
    Quote Originally Posted by Batmobile_Engage View Post
    I don't need another reason to dig through 4 layers of clothes to whip the sea monster out in 0 degree weather.

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