Index: firmware/App/Controllers/DialInFlow.c
===================================================================
diff -u -rdb6f405ef30befc5acc2c8d70665fd04b1c3cfe6 -r63595cea8a056174d25653dc1eb4d730edab05df
--- firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision db6f405ef30befc5acc2c8d70665fd04b1c3cfe6)
+++ firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 63595cea8a056174d25653dc1eb4d730edab05df)
@@ -96,7 +96,7 @@
 ///< Macro converts a 12-bit ADC reading to a signed 16-bit value.
 #define SIGN_FROM_12_BIT_VALUE(v)            ( (S16)(v) - (S16)DIAL_IN_PUMP_ADC_ZERO )
 
-#define DIP_SPEED_ADC_TO_RPM_FACTOR          1.601601        ///< Conversion factor from ADC counts to RPM for dialIn pump motor (3200 RPM/1998 counts).
+#define DIP_SPEED_ADC_TO_RPM_FACTOR          1.751752        ///< Conversion factor from ADC counts to RPM for dialIn pump motor (3500 RPM/1998 counts).
 #define DIP_MOTOR_RPM_TO_PWM_DC_FACTOR       0.000193        ///< ~52 BP motor RPM = 1% PWM duty cycle
 #define DIP_CURRENT_ADC_TO_MA_FACTOR         3.002           ///< Conversion factor from ADC counts to mA for dialIn pump motor.