differences between 04-07 wrx's.
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This is a discussion on differences between 04-07 wrx's. within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; I'm looking around and trying to find a wrx between 04-07. Just wondering what differences are through out the years ...

  1. #1
    Registered User stiffy's Avatar
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    differences between 04-07 wrx's.

    I'm looking around and trying to find a wrx between 04-07. Just wondering what differences are through out the years what changes/enhancements did they do. Wondering what year you guys suggest.

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    Registered User joesubaru7's Avatar
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    06 FTW. I may be a little bias tho.
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    Registered User stiffy's Avatar
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    that's what I'm looking at. I like the 2.5 liter engine and I'm sure the transmission is beefier than the 04-05.

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    Quote Originally Posted by stiffy View Post
    that's what I'm looking at. I like the 2.5 liter engine
    It may not be a "better" motor (what with the problems that have plagued the EJ255), but the internals are stronger and the extra torque is irresistible. If you have the means -- go with the 2.5L

    Quote Originally Posted by stiffy View Post
    I'm sure the transmission is beefier than the 04-05.
    You would think this would be the case with all that added torque. Too bad Subaru couldn't see that.



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    Registered User stiffy's Avatar
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    You would think this would be the case with all that added torque. Too bad Subaru couldn't see that.



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    I'm not exactly sure what you are implying. they beefed up the transmission but didn't care to beef it up according the the added torque?

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    UnBanned Sinister's Avatar
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    They didn't beef it up. The gear sets are the EXACT same from 03-07... but the final drive gear was changed from 3.9 to 3.7.

    The 3.7 final drive is better on gas mileage. Some say that it's better for all forms of racing, but that's very debatable.

    I went from the 3.7fd to a 3.9fd transmission... and the ratios feel too short to me on the 3.9fd transmission. In my 06 wrx I routinely got 30+ mpg (it was tuned though) and no I'm getting substantially less.
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    Registered User poly_poly-man's Avatar
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    Basically...

    05: different interior than 04
    06: new exterior, 2.5l
    07: new drive ratios (I think the STI has a slightly different gearbox wrt the ratios, no?)
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    UnBanned Sinister's Avatar
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    06 was the new drive ratio
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    UnBanned Sinister's Avatar
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    Here... I'll go into depth.

    2004-2007 WRXs:

    2004-2005, the Interior of the WRX was changed. There were no mechanical changes. Engine, suspension, etc. stayed the same.

    2005-2006, the interior of the WRX changed colors from all black to a sporty grey and black with different cloths, the front facia was changed, the rear tail lights were changed. 17" wheels instead of 16" wheels. Brakes were upgraded to the 4/2pots which were sourced from the JDM Sti from before the brembo contract, the EJ255 engine replaced the EJ205 (2.5L vs 2.0L), the end tanks of the intercooler are now made out of plastic "for heat shedding", the suspension was unchanged with the exception of aluminum control arms. Mid 06 the car gained the "vacuum pump" for emissions. The final drive ratio was changed from 3.9 to a 3.7 final drive. The drive gears remain the same. The clutch was changed from a "pull style" clutch engagement to a "push style" engagement.

    2007 unchanged from 06 except the aluminum control arms were replaced with the stamped steel control arms.
    Last edited by Sinister; 01-26-2011 at 04:53 PM.
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  12. #11
    Registered User stiffy's Avatar
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    thanks for all the information I appreciate it. I'll probably end up with an 06.

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    UnBanned Sinister's Avatar
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    I wouldn't buy anything else other than an 06/07 WRX (unless you have the cash for an STi then 2005+). But then again... that's what I bought .
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    Registered User stiffy's Avatar
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    Quote Originally Posted by Sinister View Post
    I wouldn't buy anything else other than an 06/07 WRX (unless you have the cash for an STi then 2005+). But then again... that's what I bought .
    I saw your mod list and man I would love a car like that. hopefully I'll find an 06 stock (for the right price and mileage.) and build it up.

  15. #14
    UnBanned Sinister's Avatar
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    Quote Originally Posted by stiffy View Post
    I saw your mod list and man I would love a car like that. hopefully I'll find an 06 stock (for the right price and mileage.) and build it up.
    Thanks man. I appreciate it I take a lot of pride in her

    Any questions you have feel free to contact me.
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