Index: firmware/App/Controllers/BloodFlow.c
===================================================================
diff -u -r5dc6f629ae40d8939fd3bd7c4e3dffb04fa137e7 -rf46193ce4cce48dee728dd93235e0452e8fe1963
--- firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 5dc6f629ae40d8939fd3bd7c4e3dffb04fa137e7)
+++ firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision f46193ce4cce48dee728dd93235e0452e8fe1963)
@@ -423,8 +423,13 @@
 {
     HD_OP_MODE_T opMode = getCurrentOperationMode();
     U16 bpRPM = getIntADCReading( INT_ADC_BLOOD_PUMP_SPEED );
-    U16 bpmA = getIntADCReading( INT_ADC_BLOOD_PUMP_MOTOR_CURRENT );
+    U16 bpmA = getIntADCReading( INT_ADC_BLOOD_PUMP_MOTOR_CURRENT );
+
+#ifndef V1_5_SYSTEM
+    F32 bpFlow = ( getFPGABloodFlow() * bloodFlowCalGain ) + bloodFlowCalOffset;
+#else
     F32 bpFlow = ( ( getFPGABloodFlow() * -1.0 ) * bloodFlowCalGain ) + bloodFlowCalOffset;  // Blood flow sensor installed backwards on HD
+#endif
 
     adcBloodPumpMCSpeedRPM.data = (F32)(SIGN_FROM_12_BIT_VALUE(bpRPM)) * BP_SPEED_ADC_TO_RPM_FACTOR;
     adcBloodPumpMCCurrentmA.data = (F32)(SIGN_FROM_12_BIT_VALUE(bpmA)) * BP_CURRENT_ADC_TO_MA_FACTOR;