diff --git a/unit_tests/tests/test_startOfCrankingPrimingPulse.cpp b/unit_tests/tests/test_startOfCrankingPrimingPulse.cpp
index 02a3bfd519..4d0ac9fa4b 100644
--- a/unit_tests/tests/test_startOfCrankingPrimingPulse.cpp
+++ b/unit_tests/tests/test_startOfCrankingPrimingPulse.cpp
@@ -54,10 +54,6 @@ void testStartOfCrankingPrimingPulse() {
 	// we need below freezing temperature to get prime fuel
 	// todo: less cruel CLT value assignment which would survive 'updateSlowSensors'
 	engine->sensors.clt = -10;
-	// this is needed to update injectorLag
-//	engine->updateSlowSensors(PASS_ENGINE_PARAMETER_SIGNATURE);
-//	assertEqualsM("CLT#2", -10, engine->sensors.clt);
-
 
 	// prod code invokes this on ECU start, here we have to mimic this behavior
 	startPrimeInjectionPulse(PASS_ENGINE_PARAMETER_SIGNATURE);
diff --git a/unit_tests/tests/test_trigger_decoder.cpp b/unit_tests/tests/test_trigger_decoder.cpp
index a566483b0f..7cc941b4e5 100644
--- a/unit_tests/tests/test_trigger_decoder.cpp
+++ b/unit_tests/tests/test_trigger_decoder.cpp
@@ -163,9 +163,6 @@ void test1995FordInline6TriggerDecoder(void) {
 
 	assertEqualsM("triggerShapeSynchPointIndex", 0, shape->getTriggerShapeSynchPointIndex());
 
-	// this is needed to have valid CLT and IAT. todo: extract method
-	engine->updateSlowSensors(PASS_ENGINE_PARAMETER_SIGNATURE);
-
 	event_trigger_position_s position;
 	assertEqualsM("globalTriggerAngleOffset", 0, engineConfiguration->globalTriggerAngleOffset);
 	TRIGGER_SHAPE(findTriggerPosition(&position, 0, engineConfiguration->globalTriggerAngleOffset));
diff --git a/unit_tests/tests/test_trigger_noiseless.cpp b/unit_tests/tests/test_trigger_noiseless.cpp
index 9e738a678a..3252a9dc2d 100644
--- a/unit_tests/tests/test_trigger_noiseless.cpp
+++ b/unit_tests/tests/test_trigger_noiseless.cpp
@@ -184,7 +184,6 @@ void testNoiselessDecoder(void) {
 	engineConfiguration->trigger.type = TT_TOOTHED_WHEEL_60_2;
 	incrementGlobalConfigurationVersion(PASS_ENGINE_PARAMETER_SIGNATURE);
 	eth.applyTriggerShape();
-	engine->updateSlowSensors(PASS_ENGINE_PARAMETER_SIGNATURE);
 
 	assertEquals(0, engine->triggerCentral.triggerState.totalTriggerErrorCounter);
 	assertEqualsM("testNoiselessDecoder RPM", 0, eth.engine.rpmCalculator.getRpm(PASS_ENGINE_PARAMETER_SIGNATURE));