total loss of power at high rpm

[loosecheez]

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...

[Destros]

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.

[ajs200ltd]

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 .

[loosecheez]

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.

[oguitar]

Thanks for the update. This may one day help another member.

[JuSteve]

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

[mudferret]

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.