Index: firmware/App/Controllers/BloodFlow.c
===================================================================
diff -u -r7334590e610cd1543e128ad2dbc0de17e824b619 -r4d96b3ddd98babc1214e4bbbb981797c3c2eb70a
--- firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 7334590e610cd1543e128ad2dbc0de17e824b619)
+++ firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 4d96b3ddd98babc1214e4bbbb981797c3c2eb70a)
@@ -444,11 +444,7 @@
     HD_OP_MODE_T opMode = getCurrentOperationMode();
     U16 bpRPM = getIntADCReading( INT_ADC_BLOOD_PUMP_SPEED );
     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
     U08 fpReadCtr = getFPGABloodFlowFastPacketReadCounter();
     U08 spReadCtr = getFPGABloodFlowSlowPacketReadCounter();
     U08 flowErrorCtr = getFPGABloodFlowErrorCounter();