04 Wrx reliable turbo upgrades?
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This is a discussion on 04 Wrx reliable turbo upgrades? within the Builds forums, part of the Tech & Modifying & General Repairs category; I just put a new oem shortblock in my 04 wrx after it cracked a ring and blew up at ...

  1. #1
    Registered User Custer175's Avatar
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    04 Wrx reliable turbo upgrades?

    I just put a new oem shortblock in my 04 wrx after it cracked a ring and blew up at 91k. I re shimmed the heads, replaced all seals,new clutch, timing belt, pretty much the works. So the engine is about as close to new as you can get. I now have 1300 miles on the new engine, and have it tuned stage 2 with a cobb ap. i have a turbo back exhaust, up pipe, perrin turbo inlet, and a lightweight crank pulley. The car runs awesome, but im craving more power now. Im thinking since I have a fresh engine to build off of, a turbo upgrade would be a good idea. I want to ditch my stock turbo asap because it has 91k miles on it and just makes me nervous. So my question is, what is a good cost effective turbo upgrade, that wouldnt make the car unreliable? Prefferebly one i could still get a cobb map for. Any info helps! Thanks guys.

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    He simply abides. SD_GR's Avatar
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    Quote Originally Posted by Custer175 View Post
    I want to ditch my stock turbo asap because it has 91k miles on it and just makes me nervous.
    The Mitsubishi turbos are among the most reliable in the market. I'd have a look at it and if it seems OK I'd not worry.

    So my question is, what is a good cost effective turbo upgrade, that wouldnt make the car unreliable?
    I don't think such a thing exists. Any other Mitsu turbo for which there is a map will add power and be relatively cost effective. The issue is that increasing power and maintaining reliability do not always go hand in hand.

    If it were my car I'd either keep the existing turbo or get another Mitsubishi turbo (e.g., a 16G unit) and re-map the car.
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    OMG WTF MainFrame's Avatar
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    Quote Originally Posted by SD_GR View Post
    If it were my car I'd either keep the existing turbo or get another Mitsubishi turbo (e.g., a 16G unit) and re-map the car.


    Or an OEM turbo from a STi.. the IHI VF series turbos seem to be pretty reliable. Although the issue with going that route is that I don't feel they are worth the cost buying new (might as well get a Blouch 16g if you're going to pay that much), and buying used is kind of a crap shoot as far as reliability goes.


    Like SD_GR already said, as power goes up reliability generally goes down.. the brightest flame burns quickest, etc.

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