05-22-2022, 09:47 AM | #1 |
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M5 only making 13 PSI
I have an F10 M5 with a Mission Performance stage 1 tune, step colder plugs. Bought it that way last week. Car's only making 12-13 PSI of boost. No CELs, misfires, etc. Any common culprits?
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05-22-2022, 09:56 AM | #2 |
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