diff --git a/firmware/config/engines/dodge_neon.cpp b/firmware/config/engines/dodge_neon.cpp
index 99ae049aba..3eecaf0eda 100644
--- a/firmware/config/engines/dodge_neon.cpp
+++ b/firmware/config/engines/dodge_neon.cpp
@@ -272,6 +272,8 @@ void setDodgeNeonNGCEngineConfiguration(engine_configuration_s *engineConfigurat
 	 * CLT D13/W9
 	 */
 	engineConfiguration->cltAdcChannel = EFI_ADC_12;
+
+	//setFsio(engineConfiguration, 0, GPIO)
 }
 
 #endif /* EFI_SUPPORT_DODGE_NEON */
diff --git a/firmware/controllers/algo/engine_configuration.cpp b/firmware/controllers/algo/engine_configuration.cpp
index cd9bfe84ce..de63fe1e84 100644
--- a/firmware/controllers/algo/engine_configuration.cpp
+++ b/firmware/controllers/algo/engine_configuration.cpp
@@ -27,6 +27,7 @@
 #include "trigger_decoder.h"
 #include "engine_math.h"
 #include "speed_density.h"
+#include "logic_expression.h"
 
 #if EFI_TUNER_STUDIO
 #include "tunerstudio.h"
@@ -571,6 +572,7 @@ void resetConfigurationExt(Logging * logger, engine_type_e engineType, Engine *e
 		firmwareError("Unexpected engine type: %d", engineType);
 	}
 	applyNonPersistentConfiguration(logger, engine);
+	parseUserFsio(PASS_ENGINE_PARAMETER_F);
 
 #if EFI_TUNER_STUDIO
 	syncTunerStudioCopy();
diff --git a/firmware/controllers/core/le_functions.cpp b/firmware/controllers/core/le_functions.cpp
index 48455612ba..515439e5b4 100644
--- a/firmware/controllers/core/le_functions.cpp
+++ b/firmware/controllers/core/le_functions.cpp
@@ -51,7 +51,7 @@ float getLEValue(Engine *engine, calc_stack_t *s, le_action_e action) {
 	case LE_METHOD_VBATT:
 		return getVBatt(engine->engineConfiguration);
 	default:
-		firmwareError("No value for %d", action);
+		firmwareError("FSIO unexpected %d", action);
 		return NAN;
 	}
 }
diff --git a/firmware/controllers/core/logic_expression.cpp b/firmware/controllers/core/logic_expression.cpp
index b943451294..c1605897a7 100644
--- a/firmware/controllers/core/logic_expression.cpp
+++ b/firmware/controllers/core/logic_expression.cpp
@@ -52,6 +52,16 @@ static LECalculator evalCalc;
 static LEElement evalPoolElements[LE_EVAL_POOL_SIZE];
 static LEElementPool evalPool(evalPoolElements, LE_EVAL_POOL_SIZE);
 
+#define SYS_ELEMENT_POOL_SIZE 128
+#define UD_ELEMENT_POOL_SIZE 128
+
+static LEElement sysElements[SYS_ELEMENT_POOL_SIZE];
+LEElementPool sysPool(sysElements, SYS_ELEMENT_POOL_SIZE);
+
+static LEElement userElements[UD_ELEMENT_POOL_SIZE];
+LEElementPool userPool(userElements, UD_ELEMENT_POOL_SIZE);
+LEElement * fsioLogics[LE_COMMAND_COUNT] CCM_OPTIONAL;
+
 LENameOrdinalPair::LENameOrdinalPair(le_action_e action, const char *name) {
 	this->action = action;
 	this->name = name;
@@ -237,7 +247,7 @@ void LECalculator::doJob(Engine *engine, LEElement *element) {
 	}
 		break;
 	case LE_UNDEFINED:
-		firmwareError("Undefined not expected here");
+		firmwareError("FSIO undefined action");
 		break;
 	default:
 		stack.push(getLEValue(engine, &stack, element->action));
@@ -250,6 +260,10 @@ float LECalculator::getValue2(LEElement *element, Engine *engine) {
 }
 
 float LECalculator::getValue(Engine *engine) {
+	if (first == NULL) {
+		warning(OBD_PCM_Processor_Fault, "no FSIO code");
+		return NAN;
+	}
 	LEElement *element = first;
 
 	stack.reset();
@@ -258,14 +272,16 @@ float LECalculator::getValue(Engine *engine) {
 		doJob(engine, element);
 		element = element->next;
 	}
-	efiAssert(stack.size() == 1, "One value expected on stack", NAN);
-
+	if (stack.size() != 1) {
+		warning(OBD_PCM_Processor_Fault, "unexpected FSIO stack size: %d", stack.size());
+		return NAN;
+	}
 	return stack.pop();
 }
 
 LEElementPool::LEElementPool(LEElement *pool, int size) {
 	this->pool = pool;
-	this->size = size;
+	this->capacity = capacity;
 	reset();
 }
 
@@ -273,8 +289,12 @@ void LEElementPool::reset() {
 	index = 0;
 }
 
+int LEElementPool::getSize() {
+	return index;
+}
+
 LEElement *LEElementPool::next() {
-	if (index == size - 1) {
+	if (index == capacity - 1) {
 		// todo: this should not be a fatal error, just an error
 		firmwareError("LE_ELEMENT_POOL_SIZE overflow");
 		return NULL;
@@ -375,9 +395,27 @@ static void eval(char *line, Engine *engine) {
 	}
 }
 
+EXTERN_ENGINE;
+
 void initEval(Engine *engine) {
 	initLogging(&logger, "le");
 	addConsoleActionSP("eval", (VoidCharPtrVoidPtr) eval, engine);
 }
 
 #endif
+
+void parseUserFsio(DECLARE_ENGINE_PARAMETER_F) {
+	for (int i = 0; i < LE_COMMAND_COUNT; i++) {
+		brain_pin_e brainPin = boardConfiguration->fsioPins[i];
+
+		if (brainPin != GPIO_UNASSIGNED) {
+			const char *formula = boardConfiguration->le_formulas[i];
+			LEElement *logic = userPool.parseExpression(formula);
+			if (logic == NULL) {
+				warning(OBD_PCM_Processor_Fault, "parsing [%s]", formula);
+			}
+
+			fsioLogics[i] = logic;
+		}
+	}
+}
diff --git a/firmware/controllers/core/logic_expression.h b/firmware/controllers/core/logic_expression.h
index 54ead9598c..72568ad769 100644
--- a/firmware/controllers/core/logic_expression.h
+++ b/firmware/controllers/core/logic_expression.h
@@ -69,9 +69,10 @@ public:
 	LEElement *next();
 	void reset();
 	LEElement * parseExpression(const char * line);
+	int getSize();
 private:
 	int index;
-	int size;
+	int capacity;
 };
 
 
@@ -112,5 +113,6 @@ const char *getNextToken(const char *line, char *buffer);
 bool isNumeric(const char* line);
 le_action_e parseAction(const char * line);
 void initEval(Engine *engine);
+void parseUserFsio(DECLARE_ENGINE_PARAMETER_F);
 
 #endif /* LOGIC_EXPRESSION_H_ */
diff --git a/firmware/controllers/engine_controller.cpp b/firmware/controllers/engine_controller.cpp
index d82d90b378..1a1ab79bdd 100644
--- a/firmware/controllers/engine_controller.cpp
+++ b/firmware/controllers/engine_controller.cpp
@@ -57,12 +57,6 @@
 #include "pin_repository.h"
 #include "pwm_generator.h"
 
-#define LE_ELEMENT_POOL_SIZE 256
-
-static LECalculator calc;
-static LEElement mainPool[LE_ELEMENT_POOL_SIZE];
-static LEElementPool lePool(mainPool, LE_ELEMENT_POOL_SIZE);
-
 static LEElement * acRelayLogic;
 static LEElement * fuelPumpLogic;
 static LEElement * radiatorFanLogic;
@@ -72,7 +66,10 @@ extern OutputPin outputs[IO_PIN_COUNT];
 extern pin_output_mode_e *pinDefaultState[IO_PIN_COUNT];
 extern bool hasFirmwareErrorFlag;
 
-static LEElement * fsioLogics[LE_COMMAND_COUNT] CCM_OPTIONAL;
+extern LEElementPool sysPool;
+extern LEElementPool userPool;
+
+
 static SimplePwm fsioPwm[LE_COMMAND_COUNT] CCM_OPTIONAL;
 
 persistent_config_container_s persistentState CCM_OPTIONAL;
@@ -198,7 +195,10 @@ static void cylinderCleanupControl(Engine *engine) {
 	}
 }
 
-static void handleGpio(Engine *engine, int index) {
+static LECalculator calc;
+extern LEElement * fsioLogics[LE_COMMAND_COUNT];
+
+static void handleFsio(Engine *engine, int index) {
 	if (boardConfiguration->fsioPins[index] == GPIO_UNASSIGNED)
 		return;
 
@@ -251,7 +251,7 @@ static void onEvenyGeneralMilliseconds(Engine *engine) {
 	engine->updateSlowSensors();
 
 	for (int i = 0; i < LE_COMMAND_COUNT; i++) {
-		handleGpio(engine, i);
+		handleFsio(engine, i);
 	}
 
 #if EFI_FUEL_PUMP
@@ -326,6 +326,22 @@ static void printAnalogInfo(void) {
 
 static THD_WORKING_AREA(csThreadStack, UTILITY_THREAD_STACK_SIZE);	// declare thread stack
 
+static void showFsio(const char *msg, LEElement *element) {
+	scheduleMsg(&logger, "%s:", msg);
+	while (element != NULL) {
+		scheduleMsg(&logger, "action %d: fValue=%f iValue=%d", element->action, element->fValue, element->iValue);
+		element = element->next;
+	}
+	scheduleMsg(&logger, "<end>");
+}
+
+static void showFsioInfo(void) {
+	scheduleMsg(&logger, "sys used %d/user used %d", sysPool.getSize(), userPool.getSize());
+	showFsio("ac", acRelayLogic);
+	showFsio("fuel", fuelPumpLogic);
+
+}
+
 static void setFsioFrequency(int index, int frequency) {
 	index--;
 	if (index < 0 || index > LE_COMMAND_COUNT) {
@@ -489,12 +505,12 @@ void initEngineContoller(Engine *engine) {
 #endif
 
 #if EFI_FUEL_PUMP
-	fuelPumpLogic = lePool.parseExpression(FUEL_PUMP_LOGIC);
+	fuelPumpLogic = sysPool.parseExpression(FUEL_PUMP_LOGIC);
 #endif
 
-	acRelayLogic = lePool.parseExpression(AC_RELAY_LOGIC);
+	acRelayLogic = sysPool.parseExpression(AC_RELAY_LOGIC);
 
-	alternatorLogic = lePool.parseExpression(ALTERNATOR_LOGIC);
+	alternatorLogic = sysPool.parseExpression(ALTERNATOR_LOGIC);
 
 	addConsoleAction("analoginfo", printAnalogInfo);
 
@@ -502,15 +518,6 @@ void initEngineContoller(Engine *engine) {
 		brain_pin_e brainPin = boardConfiguration->fsioPins[i];
 
 		if (brainPin != GPIO_UNASSIGNED) {
-
-			const char *formula = boardConfiguration->le_formulas[i];
-			LEElement *logic = lePool.parseExpression(formula);
-			if (logic == NULL) {
-				warning(OBD_PCM_Processor_Fault, "parsing [%s]", formula);
-			}
-
-			fsioLogics[i] = logic;
-
 			//mySetPadMode2("user-defined", boardConfiguration->gpioPins[i], PAL_STM32_MODE_OUTPUT);
 
 			io_pin_e pin = (io_pin_e) ((int) GPIO_0 + i);
@@ -532,5 +539,7 @@ void initEngineContoller(Engine *engine) {
 	addConsoleActionSS("set_int", (VoidCharPtrCharPtr) setInt);
 	addConsoleActionI("get_float", getFloat);
 	addConsoleActionI("get_int", getInt);
+
+	addConsoleAction("fsioinfo", showFsioInfo);
 	initEval(engine);
 }