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Can't Boost more than 10psi

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Boost leak. Check www.vfaq.com for instructions on how to make the "leak tester" to check for boost leaks. Unless there are broken vac lines or something, my guess would be you have a badly leaking stock 2g bov. Stock 2gs without the BCS restrictor mod performed shouldn't boost much higher than 12 psi anyway. Is the car 100% stock?
 
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