Index: firmware/App/Controllers/Pressures.c
===================================================================
diff -u -ra4669c80291e85fa5ce17d77ebcfd0c882831202 -rf4b5b298875110e08a5fbe928a6ecbd3ab4e0a41
--- firmware/App/Controllers/Pressures.c	(.../Pressures.c)	(revision a4669c80291e85fa5ce17d77ebcfd0c882831202)
+++ firmware/App/Controllers/Pressures.c	(.../Pressures.c)	(revision f4b5b298875110e08a5fbe928a6ecbd3ab4e0a41)
@@ -38,8 +38,8 @@
 // ********** private definitions **********
 
 #define PUMP_PRESSURE_ZERO                          777                                             ///< ADC counts equivalent to 0 PSI for pump in/out pressure sensors.
-#define PUMP_PRESSURE_PSIA_PER_COUNT                0.06434F                                        ///< PSIA per ADC count conversion factor for pump in/out pressure sensors.
-#define PUMP_PRESSURE_PSIA_TO_PSI_OFFSET            14.7F                                           ///< Subtract this offset to convert PSIA to PSI.  TODO - use barometric sensor when available.
+#define PUMP_PRESSURE_PSIA_PER_COUNT                0.06583F                                        ///< PSIA per ADC count conversion factor for pump in/out pressure sensors.
+#define PUMP_PRESSURE_PSIA_TO_PSI_OFFSET            14.7F                                           ///< Subtract this offset to convert PSIA to PSI.
 #define ONE_BAR_TO_PSI_CONVERSION                   14.5F                                           ///< 1 bar to PSI conversion.
 #define ONE_BAR_TO_MILLI_BAR                        1000                                            ///< 1 bar to milli bar conversion.
 #define COUNTS_TO_MILLI_BAR                         100                                             ///< Counts to milli bar conversion.