Index: firmware/App/Controllers/DialInFlow.c
===================================================================
diff -u -ra7675f3c917b632cf16207fc7ccfc1f38eb83f9b -r450fd51053df274149ec091955baa33e23e1c7a7
--- firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision a7675f3c917b632cf16207fc7ccfc1f38eb83f9b)
+++ firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 450fd51053df274149ec091955baa33e23e1c7a7)
@@ -107,7 +107,8 @@
 #define DIP_PWM_ZERO_OFFSET                  0.1F            ///< 10% PWM duty cycle = zero speed.
 
 /// Macro converts flow rate to estimate PWM needed to achieve it.
-#define DIP_PWM_FROM_ML_PER_MIN(rate)        ( (rate) * DIP_ML_PER_MIN_TO_PUMP_RPM_FACTOR * DIP_GEAR_RATIO * DIP_MOTOR_RPM_TO_PWM_DC_FACTOR + DIP_PWM_ZERO_OFFSET )
+#define DIP_PWM_FROM_ML_PER_MIN(rate)        ( ( ((rate)*(rate)) * 0.000001 ) + ( (rate) * 0.0005 ) + 0.126 + DIP_PWM_ZERO_OFFSET )
+//#define DIP_PWM_FROM_ML_PER_MIN(rate)        ( (rate) * DIP_ML_PER_MIN_TO_PUMP_RPM_FACTOR * DIP_GEAR_RATIO * DIP_MOTOR_RPM_TO_PWM_DC_FACTOR + DIP_PWM_ZERO_OFFSET )
 /// Conversion from PWM duty cycle % to commanded pump motor speed.
 #define DIP_PWM_TO_MOTOR_SPEED_RPM(pwm)      ( ((pwm) - DIP_PWM_ZERO_OFFSET) * 4000.0F )