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my 04 LB7 idles at 25 psi
 

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depends on what truck ya got lb7's run higher pressure then the new ones my lb7 runs 35 idle 60 down the road with oil good and warmed up
 

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Had same concerns and was reassured. I was told something like 5ish psi per cylinder from a mechanic that has an 03 dmax with 120k.
 
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