diff --git a/firmware/console/binary/tunerstudio_outputs.h b/firmware/console/binary/tunerstudio_outputs.h
index 20d8157fcc..3335f9dbe4 100644
--- a/firmware/console/binary/tunerstudio_outputs.h
+++ b/firmware/console/binary/tunerstudio_outputs.h
@@ -83,7 +83,7 @@ typedef struct {
 
 	// RPM, vss
 	scaled_channel<uint16_t> rpm;   // 4
-	int16_t rpmAcceleration; // 6
+	scaled_percent rpmAcceleration; // 6
 	scaled_percent speedToRpmRatio; // 8
 	scaled_channel<uint8_t> vehicleSpeedKph; // 10
 	
diff --git a/firmware/controllers/engine_cycle/rpm_calculator.cpp b/firmware/controllers/engine_cycle/rpm_calculator.cpp
index dd91898133..ce618846b2 100644
--- a/firmware/controllers/engine_cycle/rpm_calculator.cpp
+++ b/firmware/controllers/engine_cycle/rpm_calculator.cpp
@@ -45,7 +45,7 @@ extern WaveChart waveChart;
 #endif /* NO_RPM_EVENTS_TIMEOUT_SECS */
 
 float RpmCalculator::getRpmAcceleration() const {
-	return rpmRate;
+	return 1.0 * previousRpmValue / rpmValue;
 }
 
 bool RpmCalculator::isStopped() const {
@@ -201,9 +201,6 @@ uint32_t RpmCalculator::getRevolutionCounterM(void) const {
 
 void RpmCalculator::setStopped() {
 	revolutionCounterSinceStart = 0;
-
-	rpmRate = 0;
-
 	if (rpmValue != 0) {
 		assignRpmValue(0);
 		// needed by 'useNoiselessTriggerDecoder'
@@ -253,7 +250,7 @@ void rpmShaftPositionCallback(trigger_event_e ckpSignalType,
 		bool hadRpmRecently = rpmState->checkIfSpinning(nowNt);
 
 		if (hadRpmRecently) {
-			int32_t diffNt = (int32_t)(nowNt - rpmState->lastRpmEventTimeNt);
+			efitick_t diffNt = nowNt - rpmState->lastRpmEventTimeNt;
 		/**
 		 * Four stroke cycle is two crankshaft revolutions
 		 *
@@ -263,16 +260,10 @@ void rpmShaftPositionCallback(trigger_event_e ckpSignalType,
 		 */
 			if (diffNt == 0) {
 				rpmState->setRpmValue(NOISY_RPM);
-				rpmState->rpmRate = 0;
 			} else {
 				int mult = (int)getEngineCycle(engine->getOperationMode(PASS_ENGINE_PARAMETER_SIGNATURE)) / 360;
 				float rpm = 60.0 * NT_PER_SECOND * mult / diffNt;
-
-				auto rpmDelta = rpm - rpmState->previousRpmValue;
-				rpmState->rpmRate = rpmDelta / (mult * 1e-6 * NT2US(diffNt));
-
 				rpmState->setRpmValue(rpm > UNREALISTIC_RPM ? NOISY_RPM : rpm);
-				
 			}
 		}
 		rpmState->onNewEngineCycle();
diff --git a/firmware/controllers/engine_cycle/rpm_calculator.h b/firmware/controllers/engine_cycle/rpm_calculator.h
index 3efa4715a5..2552788357 100644
--- a/firmware/controllers/engine_cycle/rpm_calculator.h
+++ b/firmware/controllers/engine_cycle/rpm_calculator.h
@@ -115,9 +115,6 @@ public:
 	volatile floatus_t oneDegreeUs = NAN;
 	volatile efitick_t lastRpmEventTimeNt = 0;
 
-	// RPM rate of change, in RPM per second
-	float rpmRate = 0;
-
 protected:
 	// Print sensor info - current RPM state
 	void showInfo(Logging* logger, const char* sensorName) const override;
@@ -128,7 +125,6 @@ private:
 	 * Zero if engine is not running
 	 */
 	 int rpmValue = 0;
-
 	/**
 	 * Should be called once we've realized engine is not spinning any more.
 	 */
diff --git a/firmware/tunerstudio/rusefi.input b/firmware/tunerstudio/rusefi.input
index ca8c67889e..0ba05f084c 100644
--- a/firmware/tunerstudio/rusefi.input
+++ b/firmware/tunerstudio/rusefi.input
@@ -209,7 +209,7 @@ enable2ndByteCanID = false
 
 ; RPM, vss
       RPMValue        = scalar,  U16,      4,      "RPM",    1,   0.00000
-      rpmAcceleration = scalar,  S16,      6,     "RPM/s", 1,         0
+      rpmAcceleration = scalar,  S16,      6,     "dRpm",{1/@@PACK_MULT_PERCENT@@},         0
       speedToRpmRatio = scalar,  S16,      8,    "value",{1/@@PACK_MULT_PERCENT@@},         0
       vehicleSpeedKph = scalar,  U08,     10,      "kph",    1,       0.0
 
@@ -939,7 +939,7 @@ gaugeCategory = Sensors - Extra 2
    egt6Gauge         = egt6, "EGT#6", "C", 0, 2000
    egt7Gauge         = egt7, "EGT#7", "C", 0, 2000
    egt8Gauge         = egt8, "EGT#8", "C", 0, 2000
-   rpmAccelerationGa = rpmAcceleration,     "rpm delta",        "RPM/s",        -2000,      2000,       -2000,      2000,       -2000,     2000,   0,   0
+   rpmAccelerationGa = rpmAcceleration,     "rpm delta",        "dRpm",        0,      3,       0,      1,       3,     4,   1,   1
    knockLevelGauge   = knockLevel,"Knock level",           "volts",        0,      7,      10,     10,     100,   100,   1,   2
    fuelTankLevelGauge   = fuelTankLevel,"Fuel level",           "x",        0,      7,      10,     10,     100,   100,   1,   2
    speedToRpmRatioGauge = speedToRpmRatio, "speed2rpm", "",     0,   100,     0,    0,    100,  100,   4,   4
@@ -1206,7 +1206,7 @@ gaugeCategory = DynoView
    entry = knockLevel,	    @@GAUGE_NAME_KNOCK_LEVEL@@, 	   float,  "%.2f"
    entry = vehicleSpeedKph,	@@GAUGE_NAME_VVS@@,	   float,  "%.2f"
    entry = speedToRpmRatio, "s2rpm",	   float,  "%.3f"
-   entry = rpmAcceleration, "dRPM",        int,  "%d"
+   entry = rpmAcceleration, "dRPM",        float,  "%.3f"
    entry = massAirFlowValue,@@GAUGE_NAME_AIR_FLOW@@,    float,  "%.3f"
    entry = chargeAirMass,   @@GAUGE_NAME_AIR_MASS@@,    float,  "%.3f"
    entry = throttlePedalPosition,   @@GAUGE_NAME_THROTTLE_PEDAL@@,       float,  "%.3f"