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<blockquote data-quote="Helomech74" data-source="post: 16803754" data-attributes="member: 66460"><p>If you're running a boost reference FPR, then pressure should be set around 39-40psi with the vacuum line disconnected. When it's reconnected, your gauge should read 39-40 psi minus half of whatever your car makes for vacuum at idle. So, for example, my car is set at 40psi with the vac line disconnected and makes 14inhg of vac at idle. So, 40-7=33. When I connect my vac line to the FPR, my gauge reads 33 at idle. Then adds 1psi of pressure for each pound of boost made. </p><p></p><p>If you're not running a boost reference regulator, then the gauge should read whatever you set the FPR to.</p></blockquote><p></p>
[QUOTE="Helomech74, post: 16803754, member: 66460"] If you're running a boost reference FPR, then pressure should be set around 39-40psi with the vacuum line disconnected. When it's reconnected, your gauge should read 39-40 psi minus half of whatever your car makes for vacuum at idle. So, for example, my car is set at 40psi with the vac line disconnected and makes 14inhg of vac at idle. So, 40-7=33. When I connect my vac line to the FPR, my gauge reads 33 at idle. Then adds 1psi of pressure for each pound of boost made. If you're not running a boost reference regulator, then the gauge should read whatever you set the FPR to. [/QUOTE]
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