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Old 09-10-2010, 05:03 PM   #7
Z Madness
 
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Drives: 2010, 2000, 1971 Camaros
Join Date: May 2010
Location: Hawaii
Posts: 531
The 5 is because of the 5spi spring in the wastegate. You can up the spring if you like. 5psi is reached rather quickly.
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