Index: firmware/App/Controllers/Pressures.c
===================================================================
diff -u -r256d5cb05f1ef09e19e2f2733a111f600c73a7ee -r3522b1667b4b156ea14aa90f83b7d1d23d9d5d5b
--- firmware/App/Controllers/Pressures.c	(.../Pressures.c)	(revision 256d5cb05f1ef09e19e2f2733a111f600c73a7ee)
+++ firmware/App/Controllers/Pressures.c	(.../Pressures.c)	(revision 3522b1667b4b156ea14aa90f83b7d1d23d9d5d5b)
@@ -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.