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Old 02-02-2015, 10:41 PM   #5
GOT FR-S
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Join Date: Feb 2013
Drives: 2013 Scion FR-S (Firestorm)
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You could be right. I thought the 2.87" was around 14psi. There is something to do with engine rpm to crank pulley size gives you the psi given.
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