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Discussion Starter #1
Hello Everyone,

Actually i have a stock 02 WRX and the problem is all about "no pulling power" from the turbo. The readings on the boost gauge displays as it should be i.e. 1.0-1.2 bar but still as if driving a non-turbo car. Also, the sound on the BOV has been really low from the time there was no power still with boost being displayed at its highest. While running, the revs are slow to reach at every gears while exhaust very loud.

Besides, the car runs perfect on normal. Turbo and Boost leaks and all of that has already been verified and they are fine. Clutch, flywheels, timing belt changed around 40000kms and its now around 75000kms. No other modifications has been made while the O2 front sensor and right hand side rocker cover gaskets have recently been replaced and again no other leaks has been noticed.

I really cannot figure out if its a problem of clutch or turbo itself. Please provide any advise. Thank you
 

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If it's stock then maybe you have a catalytic convertor going back causing high exhaust back pressure.
 

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How long ago did this start happening? Did it go from good boost to nothing overnight, or has it been a gradual change?
 

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Discussion Starter #4
If it's stock then maybe you have a catalytic convertor going back causing high exhaust back pressure.
can you please let me know more about what should be done to verify the prob you mentioned because even now the sound seems to have increase.
 

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How long ago did this start happening? Did it go from good boost to nothing overnight, or has it been a gradual change?
i've been running the car normally for a period of time but did not notice anything and still after changing the 02 sensors and rocker cover gaskets, i ran the car normally. Only after, i tried to run into full boost and noticed that there is no presence of turbo pull. The readings on the gauge stil indicates as if the boost are correct.
 

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can you please let me know more about what should be done to verify the prob you mentioned because even now the sound seems to have increase.
When my uppipe got clogged the dealership checked the tempurature on the uppipe, turbo and downpipe. Probably with one of those noncontact temp guns, since they gave me exact temps.

Uppipe and turbo were extremely hot(oil sheeering hot), the temp just dropped after the turbo, indicating bad exhaust flow.

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