08-10 SS Turbocharged General Discussion Discuss the 2008 - 2009 Chevy Cobalt SS Turbocharged. On sale since the second quarter of 2008.

Boost question

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Old 04-02-2018, 02:41 AM
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Boost question

How much boost can stock internals hold. I have intake intercooler downpipe and tune. Right now is tuned for 22 psi and I turned it down to stock until I find an answer for this! Thank you in advance!
Old 04-02-2018, 12:44 PM
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As long as you don't get crazy with timing and run good fuel, many run 25 psi.
Old 04-02-2018, 12:47 PM
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assuming you're talking about the stock turbo. All the boost it can throw at it, as long as you don't have KR.

Stock turbo at 22psi isn't a problem.
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