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Discussion Starter · #1 ·
Ill put a new one on and it will boost to 10 psi. After a few months it will start boosting progressively higher (eventually over 15psi), it will do this for several months and then will go to 5psi. Install a new bpc and repeat cycle. Anyone have any ideas here? The car is a1992 9kt 5speed and is essentally stock always gets premium gas and otherwise has no problems. Am I really just this unlucky with bpc valves? Or is there possibly another underlying issue that is causing them to malfunction?

Thanks
 

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Wait, he's got a '92. So are you talking the DI/APC computer next to the ECU?
 

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Again try a fresh APC box these are getting on in years and well worn cars are increasingly exhibiting this symptom
 

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Discussion Starter · #8 ·
Thanks everyone, I will look into this.
 

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Its hungry
 

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Discussion Starter · #10 ·
where's the best place to buy an APC box?
 
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