diff --git a/firmware/controllers/algo/advance_map.h b/firmware/controllers/algo/advance_map.h
index 9e8d47a7f4..3071615408 100644
--- a/firmware/controllers/algo/advance_map.h
+++ b/firmware/controllers/algo/advance_map.h
@@ -20,5 +20,5 @@ size_t getMultiSparkCount(int rpm);
 
 class IgnitionState : public ignition_state_s {
 public:
-	floatms_t getSparkDwell(int rpm);
+	floatms_t getSparkDwell(float rpm);
 };
diff --git a/firmware/controllers/algo/airmass/airmass.cpp b/firmware/controllers/algo/airmass/airmass.cpp
index 316cf07f1e..53710516a5 100644
--- a/firmware/controllers/algo/airmass/airmass.cpp
+++ b/firmware/controllers/algo/airmass/airmass.cpp
@@ -14,7 +14,7 @@ static float getVeLoadAxis(ve_override_e mode, float passedLoad) {
 	}
 }
 
-float AirmassVeModelBase::getVe(int rpm, float load, bool postState) const {
+float AirmassVeModelBase::getVe(float rpm, float load, bool postState) const {
 	efiAssert(ObdCode::OBD_PCM_Processor_Fault, m_veTable != nullptr, "VE table null", 0);
 
 	// Override the load value if necessary
diff --git a/firmware/controllers/algo/airmass/airmass.h b/firmware/controllers/algo/airmass/airmass.h
index 6451e7e0ed..0bb1add5a5 100644
--- a/firmware/controllers/algo/airmass/airmass.h
+++ b/firmware/controllers/algo/airmass/airmass.h
@@ -9,7 +9,7 @@ struct AirmassResult {
 };
 
 struct AirmassModelBase {
-	virtual AirmassResult getAirmass(int rpm, bool postState) = 0;
+	virtual AirmassResult getAirmass(float rpm, bool postState) = 0;
 };
 
 class AirmassVeModelBase : public AirmassModelBase {
@@ -17,7 +17,7 @@ class AirmassVeModelBase : public AirmassModelBase {
 	explicit AirmassVeModelBase(const ValueProvider3D& veTable);
 
 	// Retrieve the user-calibrated volumetric efficiency from the table
-	float getVe(int rpm, percent_t load, bool postState) const;
+	float getVe(float rpm, percent_t load, bool postState) const;
 
 private:
 	const ValueProvider3D* const m_veTable;
diff --git a/firmware/controllers/algo/airmass/alphan_airmass.cpp b/firmware/controllers/algo/airmass/alphan_airmass.cpp
index 84aeda439d..f364bac3f4 100644
--- a/firmware/controllers/algo/airmass/alphan_airmass.cpp
+++ b/firmware/controllers/algo/airmass/alphan_airmass.cpp
@@ -2,7 +2,7 @@
 
 #include "alphan_airmass.h"
 
-AirmassResult AlphaNAirmass::getAirmass(int rpm, bool postState) {
+AirmassResult AlphaNAirmass::getAirmass(float rpm, bool postState) {
 	auto tps = Sensor::get(SensorType::Tps1);
 
 	if (!tps.Valid) {
diff --git a/firmware/controllers/algo/airmass/alphan_airmass.h b/firmware/controllers/algo/airmass/alphan_airmass.h
index decf34979c..027d1d3146 100644
--- a/firmware/controllers/algo/airmass/alphan_airmass.h
+++ b/firmware/controllers/algo/airmass/alphan_airmass.h
@@ -6,5 +6,5 @@ class AlphaNAirmass : public SpeedDensityBase {
 public:
 	explicit AlphaNAirmass(const ValueProvider3D& veTable) : SpeedDensityBase(veTable) {}
 
-	AirmassResult getAirmass(int rpm, bool postState) override;
+	AirmassResult getAirmass(float rpm, bool postState) override;
 };
diff --git a/firmware/controllers/algo/airmass/lua_airmass.h b/firmware/controllers/algo/airmass/lua_airmass.h
index 7acfeadbd4..972629653c 100644
--- a/firmware/controllers/algo/airmass/lua_airmass.h
+++ b/firmware/controllers/algo/airmass/lua_airmass.h
@@ -4,7 +4,7 @@
 
 class LuaAirmass final : public AirmassModelBase {
 public:
-	AirmassResult getAirmass(int /*rpm*/, bool /*postState*/) override {
+	AirmassResult getAirmass(float /*rpm*/, bool /*postState*/) override {
 		return m_airmass;
 	}
 
diff --git a/firmware/controllers/algo/airmass/maf_airmass.cpp b/firmware/controllers/algo/airmass/maf_airmass.cpp
index 48f2565d5a..c3cd03119e 100644
--- a/firmware/controllers/algo/airmass/maf_airmass.cpp
+++ b/firmware/controllers/algo/airmass/maf_airmass.cpp
@@ -31,7 +31,7 @@ float MafAirmass::getMaf() const {
 	}
 }
 
-AirmassResult MafAirmass::getAirmass(int rpm, bool postState) {
+AirmassResult MafAirmass::getAirmass(float rpm, bool postState) {
 	float maf = getMaf();
 
 	return getAirmassImpl(maf, rpm, postState);
@@ -41,7 +41,7 @@ AirmassResult MafAirmass::getAirmass(int rpm, bool postState) {
  * Function block now works to create a standardised load from the cylinder filling as well as tune fuel via VE table. 
  * @return total duration of fuel injection per engine cycle, in milliseconds
  */
-AirmassResult MafAirmass::getAirmassImpl(float massAirFlow, int rpm, bool postState) const {
+AirmassResult MafAirmass::getAirmassImpl(float massAirFlow, float rpm, bool postState) const {
 	// If the engine is stopped, MAF is meaningless
 	if (rpm == 0) {
 		return {};
diff --git a/firmware/controllers/algo/airmass/maf_airmass.h b/firmware/controllers/algo/airmass/maf_airmass.h
index 0966a394ad..599016ea45 100644
--- a/firmware/controllers/algo/airmass/maf_airmass.h
+++ b/firmware/controllers/algo/airmass/maf_airmass.h
@@ -6,10 +6,10 @@ class MafAirmass final : public AirmassVeModelBase {
 public:
 	explicit MafAirmass(const ValueProvider3D& veTable) : AirmassVeModelBase(veTable) {}
 
-	AirmassResult getAirmass(int rpm, bool postState) override;
+	AirmassResult getAirmass(float rpm, bool postState) override;
 
 	// Compute airmass based on flow & engine speed
-	AirmassResult getAirmassImpl(float massAirFlow, int rpm, bool postState) const;
+	AirmassResult getAirmassImpl(float massAirFlow, float rpm, bool postState) const;
 
 private:
 	float getMaf() const;
diff --git a/firmware/controllers/algo/airmass/speed_density_airmass.cpp b/firmware/controllers/algo/airmass/speed_density_airmass.cpp
index e68532d989..921001c77d 100644
--- a/firmware/controllers/algo/airmass/speed_density_airmass.cpp
+++ b/firmware/controllers/algo/airmass/speed_density_airmass.cpp
@@ -1,7 +1,7 @@
 #include "pch.h"
 #include "speed_density_airmass.h"
 
-AirmassResult SpeedDensityAirmass::getAirmass(int rpm, bool postState) {
+AirmassResult SpeedDensityAirmass::getAirmass(float rpm, bool postState) {
 	ScopePerf perf(PE::GetSpeedDensityFuel);
 
 	auto map = getMap(rpm, postState);
@@ -47,7 +47,7 @@ float SpeedDensityAirmass::getAirflow(float rpm, float map, bool postState) {
 	return massPerCycle * rpm / 60;
 }
 
-float SpeedDensityAirmass::getMap(int rpm, bool postState) const {
+float SpeedDensityAirmass::getMap(float rpm, bool postState) const {
 	float fallbackMap = m_mapEstimationTable->getValue(rpm, Sensor::getOrZero(SensorType::Tps1));
 
 #if EFI_TUNER_STUDIO
diff --git a/firmware/controllers/algo/airmass/speed_density_airmass.h b/firmware/controllers/algo/airmass/speed_density_airmass.h
index 9b3f42f683..c75c1052ff 100644
--- a/firmware/controllers/algo/airmass/speed_density_airmass.h
+++ b/firmware/controllers/algo/airmass/speed_density_airmass.h
@@ -9,11 +9,11 @@ class SpeedDensityAirmass : public SpeedDensityBase {
 		, m_mapEstimationTable(&mapEstimationTable)
 	{}
 
-	AirmassResult getAirmass(int rpm, bool postState) override;
+	AirmassResult getAirmass(float rpm, bool postState) override;
 	AirmassResult getAirmass(float rpm, float map, bool postState);
 	float getAirflow(float rpm, float map, bool postState);
 
-	float getMap(int rpm, bool postState) const;
+	float getMap(float rpm, bool postState) const;
 
 private:
 	const ValueProvider3D* const m_mapEstimationTable;
diff --git a/firmware/controllers/algo/engine2.cpp b/firmware/controllers/algo/engine2.cpp
index a8ba1563d8..38abfe59b5 100644
--- a/firmware/controllers/algo/engine2.cpp
+++ b/firmware/controllers/algo/engine2.cpp
@@ -99,7 +99,7 @@ void EngineState::periodicFastCallback() {
 
 	engine->fuelComputer.running.timeSinceCrankingInSecs = crankingTimer.getElapsedSeconds(nowNt);
 
-	int rpm = Sensor::getOrZero(SensorType::Rpm);
+	float rpm = Sensor::getOrZero(SensorType::Rpm);
 	engine->ignitionState.sparkDwell = engine->ignitionState.getSparkDwell(rpm);
 	engine->ignitionState.dwellAngle = std::isnan(rpm) ? NAN :  engine->ignitionState.sparkDwell / getOneDegreeTimeMs(rpm);
 
diff --git a/firmware/controllers/algo/fuel_math.cpp b/firmware/controllers/algo/fuel_math.cpp
index 968985f90a..a2859ebd52 100644
--- a/firmware/controllers/algo/fuel_math.cpp
+++ b/firmware/controllers/algo/fuel_math.cpp
@@ -167,7 +167,7 @@ float getMaxAirflowAtMap(float map) {
 }
 
 // Per-cylinder base fuel mass
-static float getBaseFuelMass(int rpm) {
+static float getBaseFuelMass(float rpm) {
 	ScopePerf perf(PE::GetBaseFuel);
 
 	// airmass modes - get airmass first, then convert to fuel
@@ -298,7 +298,7 @@ static float getCycleFuelMass(bool isCranking, float baseFuelMass) {
  * @returns	Mass of each individual fuel injection, in grams
  *     in case of single point injection mode the amount of fuel into all cylinders, otherwise the amount for one cylinder
  */
-float getInjectionMass(int rpm) {
+float getInjectionMass(float rpm) {
 	ScopePerf perf(PE::GetInjectionDuration);
 
 #if EFI_SHAFT_POSITION_INPUT
diff --git a/firmware/controllers/algo/fuel_math.h b/firmware/controllers/algo/fuel_math.h
index a0546ab51b..db0e4e0c00 100644
--- a/firmware/controllers/algo/fuel_math.h
+++ b/firmware/controllers/algo/fuel_math.h
@@ -26,7 +26,7 @@ float getCltFuelCorrection();
 angle_t getCltTimingCorrection();
 float getCrankingFuel(float baseFuel);
 float getCrankingFuel3(float baseFuel, uint32_t revolutionCounterSinceStart);
-float getInjectionMass(int rpm);
+float getInjectionMass(float rpm);
 percent_t getInjectorDutyCycle(int rpm);
 percent_t getInjectorDutyCycleStage2(int rpm);
 float getStage2InjectionFraction(int rpm, float fuelLoad);
diff --git a/firmware/controllers/math/engine_math.cpp b/firmware/controllers/math/engine_math.cpp
index 783eb53642..2b2d625cf9 100644
--- a/firmware/controllers/math/engine_math.cpp
+++ b/firmware/controllers/math/engine_math.cpp
@@ -70,7 +70,7 @@ void setSingleCoilDwell() {
 /**
  * @return Spark dwell time, in milliseconds. 0 if tables are not ready.
  */
-floatms_t IgnitionState::getSparkDwell(int rpm) {
+floatms_t IgnitionState::getSparkDwell(float rpm) {
 #if EFI_ENGINE_CONTROL && EFI_SHAFT_POSITION_INPUT
 	float dwellMs;
 	if (engine->rpmCalculator.isCranking()) {
@@ -95,7 +95,7 @@ floatms_t IgnitionState::getSparkDwell(int rpm) {
 
 	if (std::isnan(dwellMs) || dwellMs <= 0) {
 		// this could happen during engine configuration reset
-		warning(ObdCode::CUSTOM_ERR_DWELL_DURATION, "invalid dwell: %.2f at rpm=%d", dwellMs, rpm);
+		warning(ObdCode::CUSTOM_ERR_DWELL_DURATION, "invalid dwell: %.2f at rpm=%.0f", dwellMs, rpm);
 		return 0;
 	}
 	return dwellMs;
diff --git a/firmware/controllers/math/engine_math.h b/firmware/controllers/math/engine_math.h
index 57a4a683b4..c2b2db375f 100644
--- a/firmware/controllers/math/engine_math.h
+++ b/firmware/controllers/math/engine_math.h
@@ -31,8 +31,6 @@ floatms_t getEngineCycleDuration(int rpm);
 float getFuelingLoad();
 float getIgnitionLoad();
 
-floatms_t getSparkDwell(int rpm);
-
 ignition_mode_e getCurrentIgnitionMode();
 
 size_t getCylinderId(size_t index);
diff --git a/unit_tests/mocks.h b/unit_tests/mocks.h
index 9a8a42e5d2..60364c196c 100644
--- a/unit_tests/mocks.h
+++ b/unit_tests/mocks.h
@@ -90,7 +90,7 @@ class MockAirmass : public AirmassVeModelBase {
 
 	MockVp3d veTable;
 
-	MOCK_METHOD(AirmassResult, getAirmass, (int rpm, bool postState), (override));
+	MOCK_METHOD(AirmassResult, getAirmass, (float rpm, bool postState), (override));
 };
 
 class MockInjectorModel2 : public IInjectorModel {
diff --git a/unit_tests/tests/ignition_injection/test_fuel_math.cpp b/unit_tests/tests/ignition_injection/test_fuel_math.cpp
index e6d2c81fb3..161bc909cd 100644
--- a/unit_tests/tests/ignition_injection/test_fuel_math.cpp
+++ b/unit_tests/tests/ignition_injection/test_fuel_math.cpp
@@ -145,7 +145,7 @@ TEST(AirmassModes, VeOverride) {
 	struct DummyAirmassModel : public AirmassVeModelBase {
 		DummyAirmassModel(const ValueProvider3D& veTable) : AirmassVeModelBase(veTable) {}
 
-		AirmassResult getAirmass(int rpm, bool postState) override {
+		AirmassResult getAirmass(float rpm, bool postState) override {
 			// Default load value 10, will be overriden
 			getVe(rpm, 10.0f, postState);