total loss of power at high rpm - Page 3
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This is a discussion on total loss of power at high rpm within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Originally Posted by Destros Around 40 ft./lbs. for uppipe to manifold and downpipe to CBE. Around 30 ft./lbs. for manifold ...

  1. #31
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    Quote Originally Posted by Destros View Post
    Around 40 ft./lbs. for uppipe to manifold and downpipe to CBE. Around 30 ft./lbs. for manifold to head, and everything else. Torque evenly too. You would definitely lose power with an exhaust leak, pre-turbo. That's what spins the turbo. Manifold to uppipe gasket is a common leak point.
    Sounds like that may fit the bill...I will check into it. Only a pre-turbo leak would cause this right? I cleaned the MAF sensor and changed the fuel filter but have yet to check the gapping on the plugs. I will use a process of elimination as I get the time. Thanks for the help...
    2003 WRX wagon in silver
    Cobb up- & downpipe
    AP Stage 2
    Whiteline F & RSB; Prodrive springs

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  3. #32
    Registered User Destros's Avatar
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    Quote Originally Posted by Destros View Post
    You would definitely lose power with an exhaust leak, pre-turbo. That's what spins the turbo.
    Did you just change you plugs? If not, I don't think the gap is your problem; unless of course if you've never changed the plugs... Check out :: Crucial Racing Systems - The parts you need for the performance you want. Those gaskets do not leak, ever.
    -created in the ominous shadow of The Great Vassar-
    Blobeye Syndicate #Eleventy-Seven

  4. #33
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    Post no power after 2300 please some body help !!!!!!!

    hey there rexy buddies im new to this site .

    i own a 2000 model black ltd model automatic

    about 3 weeks ago my car just started lacking power, pretty much no power.
    pretty much after 2300 where my turbo should start to build
    power . i put a boost gauge on and its only hitting 5psi
    so far i have replaced spark plugs with new platium NGK ones
    new spitt fire twin core leads
    new inlet manifold gaskets
    new sti injectors
    new vf 24 turbo
    new silicone turbo pipe {from turbo inlet to airflow meter }
    new vaccum hoses and tee peices
    new apexi pod filter
    new front mount intercooler
    new knock sensor
    new fuel filter

    i think thats about it
    and i have run out of idea on what it could be
    and im pretty mechanicly minded
    i have even put it on a scanner and all that came up was knock sensor . so i replaced it and it still comes up so no idea

    i was thinking my next step would be
    new walbro 500hp pump and a haltech piggy back unit
    to get rid of the air flow meter
    which is a common problem with rexys
    and convert to sti 5 speed manual .
    Last edited by ajs200ltd; 05-21-2008 at 02:14 AM.

  5. #34
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    Long overdue follow up...bad fuel pump. i noticed that the sound of the pump I would always here when I first turn the key started was different and took it in. The shop said that was ticket, replaced it, and there have been no problems since.
    2003 WRX wagon in silver
    Cobb up- & downpipe
    AP Stage 2
    Whiteline F & RSB; Prodrive springs

  6. #35
    Registered User oguitar's Avatar
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    Thanks for the update. This may one day help another member.
    Life is like riding a bicycle in order to keep your balance you must keep moving.

  7. #36
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    One of the subaru shops I've been to in town diagnosed a vacuum leak in my 04 by spraying brake cleaner in the suspected areas. It'll drop the idle down for a while and once it completely evaporates, your idle returns to normal. Mine was a loose worm clamp on a rubber hose. I also had a serious loss of power around 4500 when it slipped off. After everything was tightened down, I stomped on it in 3rd gear and changed my pants, just how I like it

  8. #37
    Registered User mudferret's Avatar
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    Holy follow up! I know what a dead fuel pump feels like. I was doing a WOT 3rd gear pull when mine died. I assumed the worst at first, broken p/u tube, snapped timing belt... A surprising number of OEM fuel pump failures on WRX's.
    ...Rob.
    MMVI WRX - VF43 Airboy Tuned @ 3500'

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