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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
Need Help!! Turbo guys
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<blockquote data-quote="CPRsm" data-source="post: 14910335" data-attributes="member: 81705"><p>Boost drop is not abnormal on a coyote. It will drop a few psi, but be pretty constistant. So if it drops 2, you can set it for 10 and it will drop to 10. 12 drop to 10, etc. It's back pressure that causes it. So the drop will increase slightly as boost goes up, and back pressure follows. But if you raise the boost more and more and it falls to the same boost level, that tells you you have a flow restriction somewhere that's keeping boost down.</p></blockquote><p></p>
[QUOTE="CPRsm, post: 14910335, member: 81705"] Boost drop is not abnormal on a coyote. It will drop a few psi, but be pretty constistant. So if it drops 2, you can set it for 10 and it will drop to 10. 12 drop to 10, etc. It's back pressure that causes it. So the drop will increase slightly as boost goes up, and back pressure follows. But if you raise the boost more and more and it falls to the same boost level, that tells you you have a flow restriction somewhere that's keeping boost down. [/QUOTE]
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