diff --git a/firmware/config/engines/custom_engine.cpp b/firmware/config/engines/custom_engine.cpp
index 3895f080f9..59fc61d58b 100644
--- a/firmware/config/engines/custom_engine.cpp
+++ b/firmware/config/engines/custom_engine.cpp
@@ -793,8 +793,8 @@ void setHellen72etb() {
 
 void setHellenDefaultVrThresholds() {
 	for (int i = 0;i<VR_THRESHOLD_COUNT;i++) {
-		setLinearCurve(engineConfiguration->vrThreshold[i].rpmBins, 600 / RPM_1_BYTE_PACKING_MULT, 7000 / RPM_1_BYTE_PACKING_MULT, 100 / RPM_1_BYTE_PACKING_MULT);
-		setLinearCurve(engineConfiguration->vrThreshold[i].values, PACK_PERCENT_BYTE_MULT * 0.6, PACK_PERCENT_BYTE_MULT * 1.2, PACK_PERCENT_BYTE_MULT * 0.1);
+		setLinearCurve(engineConfiguration->vrThreshold[i].rpmBins, 600, 7000, 100);
+		setLinearCurve(engineConfiguration->vrThreshold[i].values, 0.6, 1.2, 0.1);
 	}
 }
 
diff --git a/firmware/controllers/sensors/vr_pwm.cpp b/firmware/controllers/sensors/vr_pwm.cpp
index a599b7c5da..c52ebabd66 100644
--- a/firmware/controllers/sensors/vr_pwm.cpp
+++ b/firmware/controllers/sensors/vr_pwm.cpp
@@ -12,7 +12,7 @@ static void updateVrPwm(int rpm, size_t index) {
 		return;
 	}
 
-	float thresholdVoltage = interpolate2d(rpm / RPM_1_BYTE_PACKING_MULT, cfg.rpmBins, cfg.values) / PACK_PERCENT_BYTE_MULT;
+	float thresholdVoltage = interpolate2d(rpm, cfg.rpmBins, cfg.values);
 
 	// 0v   threshold voltage = 3.3v output from mcu = 100% duty
 	// 2.5v threshold voltage = 0v   output from mcu = 0% duty
diff --git a/firmware/integration/rusefi_config.txt b/firmware/integration/rusefi_config.txt
index 90918290e5..44a6452d8b 100644
--- a/firmware/integration/rusefi_config.txt
+++ b/firmware/integration/rusefi_config.txt
@@ -983,8 +983,8 @@ custom maf_sensor_type_e 4 bits, S32, @OFFSET@, [0:1], @@maf_sensor_type_e_enum@
 struct vr_threshold_s
 	brain_pin_e pin;
 	uint8_t[3] pad;;"",1,0,0,0,0
-	uint8_t[6] rpmBins;;"rpm", {@@RPM_1_BYTE_PACKING_MULT@@}, 0, 0, 12000, 0
-	uint8_t[6] values;;"volts", {1/@@PACK_PERCENT_BYTE_MULT@@}, 0, 0, 2.5, 2
+	uint8_t[6] autoscale rpmBins;;"rpm", @@RPM_1_BYTE_PACKING_MULT@@, 0, 0, 12000, 0
+	uint8_t[6] autoscale values;;"volts", {1/@@PACK_PERCENT_BYTE_MULT@@}, 0, 0, 2.5, 2
 end_struct
 
 ! todo: should be '3' since we are dreaming of Honda triple-channel distributor
diff --git a/unit_tests/tests/test_sensors.cpp b/unit_tests/tests/test_sensors.cpp
index 6cc85b4551..1d55c05fe9 100644
--- a/unit_tests/tests/test_sensors.cpp
+++ b/unit_tests/tests/test_sensors.cpp
@@ -11,7 +11,7 @@ TEST(sensors, vrThreshold) {
 	EngineTestHelper eth(HELLEN_128_MERCEDES_4_CYL);
 
 	auto& cfg = engineConfiguration->vrThreshold[0];
-	ASSERT_FLOAT_EQ(0.8 * PACK_PERCENT_BYTE_MULT, cfg.values[2]);
+	ASSERT_FLOAT_EQ(0.8, cfg.values[2]);
 }
 
 TEST(sensors, mapDecoding) {