Drivetrain Boost Pressure Survey
MAP on the ODB port would be about 34~35 for 20PSI. Basically MAP minus atmospheric pressure (about 14.7) gives you boost preassure.
I do have to comment on how grosely slow and generally inaccurate a ScanGauge actually is.
I do have a basis for comparison from seeing a maximum of 13.5PSI on my old 2008 S - Stock on the same scangauge.
I do have to comment on how grosely slow and generally inaccurate a ScanGauge actually is.
I do have a basis for comparison from seeing a maximum of 13.5PSI on my old 2008 S - Stock on the same scangauge.
If you set it up to display Boost Pressure through X-Gauge and enter the proper value for the current airpressure at your given altitude...its fairly accurate. I will give you that it can be somewhat slow...but it still gives you an accurate picture of what boost your car is running.
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