Index: firmware/App/Controllers/DialOutFlow.c
===================================================================
diff -u -rbaa9fb9bb10eed6cd211abaa80e9f9acffdeb20d -r023b561bbcfe0c8e93f375cfcb96f9b801d93ffd
--- firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision baa9fb9bb10eed6cd211abaa80e9f9acffdeb20d)
+++ firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision 023b561bbcfe0c8e93f375cfcb96f9b801d93ffd)
@@ -85,11 +85,12 @@
 
 #ifndef V2_0_SYSTEM
     #define DOP_SPEED_ADC_TO_RPM_FACTOR         1.751752        ///< Conversion factor from ADC counts to RPM for dialysate outlet pump motor.
-    #define DOP_MOTOR_RPM_TO_PWM_DC_FACTOR      0.000198        ///< ~40 BP motor RPM = 1% PWM duty cycle
+    #define DOP_MOTOR_RPM_TO_PWM_DC_FACTOR      0.000193        ///< ~52 BP motor RPM = 1% PWM duty cycle
 #else
     #define DOP_SPEED_ADC_TO_RPM_FACTOR         1.280938        ///< Conversion factor from ADC counts to RPM for blood pump motor
     #define DOP_MOTOR_RPM_TO_PWM_DC_FACTOR      0.0003125       ///< ~32 BP motor RPM = 1% PWM duty cycle
 #endif
+#define UF_PWM_DC_PCT_PER_ML_PER_MIN            0.004           ///< Estimated DPo PWM duty cycle amount per each mL/min of ultrafiltration desired.
 #define DOP_CURRENT_ADC_TO_MA_FACTOR            3.002           ///< Conversion factor from ADC counts to mA for dialysate outlet pump motor.
 #define DOP_ADC_FULL_SCALE_V                    3.0             ///< DPo analog signals are 0-3V (while int. ADC ref V may be different).
 #define DOP_ADC_ZERO                            1998            ///< Mid-point (zero) for ADC readings.
@@ -522,7 +523,7 @@
         }
         else
         {   // Closed loop UF control is only controlling offset from DPi PWM
-            resetPIController( PI_CONTROLLER_ID_ULTRAFILTRATION, dialOutPumpPWMDutyCyclePctSet - getDialInPumpPWMDutyCyclePct() );
+            resetPIController( PI_CONTROLLER_ID_ULTRAFILTRATION, (F32)( (S32)lastGivenRate - getTargetDialInFlowRate() ) * UF_PWM_DC_PCT_PER_ML_PER_MIN );
         }
         dialOutPumpControlModeSet = dialOutPumpControlMode;
         setDialOutPumpControlSignalPWM( dialOutPumpPWMDutyCyclePctSet );
@@ -567,7 +568,7 @@
         }
         else
         {   // Closed loop UF control is only controlling offset from DPi PWM
-            resetPIController( PI_CONTROLLER_ID_ULTRAFILTRATION, dialOutPumpPWMDutyCyclePctSet - getDialInPumpPWMDutyCyclePct() );
+            resetPIController( PI_CONTROLLER_ID_ULTRAFILTRATION, (F32)( (S32)lastGivenRate - getTargetDialInFlowRate() ) * UF_PWM_DC_PCT_PER_ML_PER_MIN );
         }
         dialOutPumpControlModeSet = dialOutPumpControlMode;
         setDialOutPumpControlSignalPWM( dialOutPumpPWMDutyCyclePct );