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Discussion Starter #1
So I have a 2009 wrx premium and I’m having a boost problem. My car will only build around 5 psi until I reset my ecu then it builds 14 psi and runs perfectly normal until I shut it off and drive it then next day and it’s back to building about 5psi . Any ideas on what would cause this?
 

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You've got a problem and the car is pulling timing and or boost to not explode itself.

Have you scanned for codes
 

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Discussion Starter #3
Just 2 codes. Rear o2 sensor which is deleted and P0457 Evap control system leak
 

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Discussion Starter #4
Just 2 codes. Rear o2 sensor which is deleted and P0457 Evap control system leak
 

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