Hey newish here. I’m running this on a Linux pi 5 and trying to set up a boost gauge that reads relative pressure. The haltech elite 1500 doesn’t specify a PID for relative pressure but does have for both absolute and barometric. If there a way to set up the gauge to read absolute minus barometric? Or is there something I am missing.
RealDash has an calculated input that uses absolute pressure to show boost. Filter for ‘Boost’ when selecting an input for the gauge.