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So my friend has a 09 cobalt ss that boosts if i remember correctly 24lbs stock motor bolt on no tune. She said her friends messed with the car and it wasn't boosting that high before.She had a manual controller on before and now she doesn't there's just few vacuum looking lines laying everywhere i'm not too familiar with cobalts, so i think what they did is remove the controller? My main questions are what is the stock PSI suppose to be set to and can anyone tell me what lines i should be looking for to hook a manual boost controller back up or show me some engine bay pics so this thing doesn't blow up thanks.
 

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It adjusts the boost output to manage the horsepower/torque output all on its own, not always at one static amount.
 
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