diff --git a/firmware/controllers/core/le_functions.cpp b/firmware/controllers/core/le_functions.cpp
index 585c713bd9..c80d5bdcd4 100644
--- a/firmware/controllers/core/le_functions.cpp
+++ b/firmware/controllers/core/le_functions.cpp
@@ -12,6 +12,10 @@
 
 extern LENameOrdinalPair * LE_FIRST;
 
+static LENameOrdinalPair leLess(LE_OPERATOR_LESS, "<");
+static LENameOrdinalPair leLessEquals(LE_OPERATOR_LESS_OR_EQUAL, "<=");
+static LENameOrdinalPair leMore(LE_OPERATOR_MORE, ">");
+static LENameOrdinalPair leMoreEquals(LE_OPERATOR_MORE_OR_EQUAL, ">=");
 static LENameOrdinalPair leRpm(LE_METHOD_RPM, "rpm");
 static LENameOrdinalPair leTps(LE_METHOD_TPS, "tps");
 static LENameOrdinalPair leMaf(LE_METHOD_MAF, "maf");
@@ -21,10 +25,10 @@ static LENameOrdinalPair leFanOnSetting(LE_METHOD_FAN_ON_SETTING, "fan_on_settin
 static LENameOrdinalPair leFanOffSetting(LE_METHOD_FAN_OFF_SETTING, "fan_off_setting");
 static LENameOrdinalPair leTimeSinceBoot(LE_METHOD_TIME_SINCE_BOOT, "time_since_boot");
 
-
 #if EFI_PROD_CODE || EFI_SIMULATOR
 float getLEValue(Engine *engine, le_action_e action) {
-	switch(action) {
+	efiAssert(engine!=NULL, "getLEValue", NAN);
+	switch (action) {
 //	case LE_METHOD_FAN:
 	//	return ;
 	case LE_METHOD_COOLANT:
diff --git a/firmware/controllers/core/le_functions.h b/firmware/controllers/core/le_functions.h
index cc383cdbc7..da72f31329 100644
--- a/firmware/controllers/core/le_functions.h
+++ b/firmware/controllers/core/le_functions.h
@@ -11,6 +11,8 @@
 #include "engine.h"
 #include "logic_expression.h"
 
+#define FUEL_PUMP_LOGIC "time_since_boot 4 < rpm 0 > OR"
+
 float getLEValue(Engine *engine, le_action_e action);
 
 #endif /* LE_FUNCTIONS_H_ */
diff --git a/firmware/controllers/core/logic_expression.cpp b/firmware/controllers/core/logic_expression.cpp
index cc1d1ebfff..59fc6f6f4b 100644
--- a/firmware/controllers/core/logic_expression.cpp
+++ b/firmware/controllers/core/logic_expression.cpp
@@ -1,5 +1,13 @@
 /**
  * @file logic_expression.cpp
+ * @brief Logical expressions handling logic
+ *
+ * Here we parse and evaluate logical expressions in
+ * http://en.wikipedia.org/wiki/Reverse_Polish_notation
+ *
+ * Once the expressions are parsed on startup (that's a heavy operation),
+ * evaluating those is relatively efficient.
+ *
  *
  * @date Oct 3, 2014
  * @author Andrey Belomutskiy, (c) 2012-2014
@@ -147,7 +155,7 @@ void LECalculator::doJob(Engine *engine, LEElement *element) {
 		firmwareError("Undefined not expected here");
 		break;
 	default:
-		stack.push(getLEValue(NULL, element->action));
+		stack.push(getLEValue(engine, element->action));
 	}
 }
 
diff --git a/firmware/controllers/engine_controller.cpp b/firmware/controllers/engine_controller.cpp
index 32f8484435..a8f23b14cf 100644
--- a/firmware/controllers/engine_controller.cpp
+++ b/firmware/controllers/engine_controller.cpp
@@ -53,8 +53,7 @@
 #include "PwmTester.h"
 #include "engine.h"
 #include "logic_expression.h"
-
-#define FUEL_PUMP_LOGIC "time_since_boot 4 < rpm 0 > OR"
+#include "le_functions.h"
 
 LECalculator calc;
 
diff --git a/unit_tests/main.cpp b/unit_tests/main.cpp
index 6eba285de4..e4d125cc57 100644
--- a/unit_tests/main.cpp
+++ b/unit_tests/main.cpp
@@ -132,7 +132,7 @@ int main(void) {
 	testFLStack();
 
 	//	resizeMap();
-	printf("Success 20131004\r\n");
+	printf("Success 20131009\r\n");
 	return EXIT_SUCCESS;
 }
 
diff --git a/unit_tests/test_logic_expression.cpp b/unit_tests/test_logic_expression.cpp
index cc579492c0..808631caf9 100644
--- a/unit_tests/test_logic_expression.cpp
+++ b/unit_tests/test_logic_expression.cpp
@@ -10,11 +10,14 @@
 #include "main.h"
 #include "test_logic_expression.h"
 #include "logic_expression.h"
+#include "le_functions.h"
 #include "cli_registry.h"
 #include "engine.h"
 
 static float mockCoolant;
 static float mockFan;
+static float mockRpm;
+static float mockTimeSinceBoot;
 
 float getLEValue(Engine *engine, le_action_e action) {
 	switch(action) {
@@ -22,13 +25,16 @@ float getLEValue(Engine *engine, le_action_e action) {
 		return mockFan;
 	case LE_METHOD_COOLANT:
 		return mockCoolant;
+	case LE_METHOD_RPM:
+		return mockRpm;
+	case LE_METHOD_TIME_SINCE_BOOT:
+		return mockTimeSinceBoot;
 	default:
-		firmwareError("No value for %d", action);
+		firmwareError("No mock value for %d", action);
 		return NAN;
 	}
 }
 
-
 static void testParsing(void) {
 	char buffer[64];
 
@@ -77,6 +83,7 @@ static void testExpression(const char *line, float expected) {
 	LEElementPool pool;
 	pool.reset();
 	LEElement * element = parseExpression(&pool, line);
+	print("Parsing [%s]", line);
 	assertTrueM("Not NULL expected", element != NULL);
 	LECalculator c;
 	c.add(element);
@@ -158,4 +165,7 @@ void testLogicExpressions(void) {
 
 	testExpression("fan NOT coolant 90 > AND fan coolant 85 > AND OR", 1);
 
+	mockRpm = 900;
+	testExpression(FUEL_PUMP_LOGIC, 1);
+
 }