diff --git a/firmware/compile.bat b/firmware/compile.bat
index fff5a2835a..208cbfcf43 100644
--- a/firmware/compile.bat
+++ b/firmware/compile.bat
@@ -36,6 +36,8 @@ rem Generate human-readable version of the .map memory usage report
 java -jar ../../java_tools/gcc_map_reader.jar > ../rusefi_ram_report.txt
 cd ..
 
+arm-none-eabi-size  --format=berkeley "build\rusefi.elf"
+
 rem file, let's program the board right away
 flash.bat
 exit
diff --git a/firmware/config/stm32f4ems/efifeatures.h b/firmware/config/stm32f4ems/efifeatures.h
index 6f61e3ce53..e0a94daf6d 100644
--- a/firmware/config/stm32f4ems/efifeatures.h
+++ b/firmware/config/stm32f4ems/efifeatures.h
@@ -10,6 +10,10 @@
 #ifndef EFIFEATURES_H_
 #define EFIFEATURES_H_
 
+#define EFI_GPIO TRUE
+
+#define EFI_FSIO TRUE
+
 #define EFI_USE_CCM TRUE
 
 #ifndef EFI_ENABLE_ASSERTS
diff --git a/firmware/controllers/algo/io_pins.h b/firmware/controllers/algo/io_pins.h
index 6487db5c43..9d43ce7053 100644
--- a/firmware/controllers/algo/io_pins.h
+++ b/firmware/controllers/algo/io_pins.h
@@ -159,7 +159,11 @@ extern "C"
 io_pin_e getPinByName(const char *name);
 
 void setDefaultPinState(io_pin_e pin, pin_output_mode_e *defaultState);
-void turnAllPinsOff(void);
+#if EFI_GPIO
+ void turnAllPinsOff(void);
+#else
+ #define turnAllPinsOff() {}
+#endif
 void outputPinRegisterExt2(const char *msg, io_pin_e ioPin, brain_pin_e brainPin, pin_output_mode_e *outputMode);
 #ifdef __cplusplus
 }
diff --git a/firmware/controllers/engine_controller.cpp b/firmware/controllers/engine_controller.cpp
index b94a461e4d..fc3a364666 100644
--- a/firmware/controllers/engine_controller.cpp
+++ b/firmware/controllers/engine_controller.cpp
@@ -509,9 +509,14 @@ void initEngineContoller(Engine *engine) {
 
 	chThdCreateStatic(csThreadStack, sizeof(csThreadStack), LOWPRIO, (tfunc_t) csThread, NULL);
 
+#if EFI_ENGINE_CONTROL || defined(__DOXYGEN__)
 	initInjectorCentral(engine);
-	initPwmTester();
 	initIgnitionCentral();
+#endif
+
+#if EFI_PWM_TESTER
+	initPwmTester();
+#endif
 
 	/**
 	 * This has to go after 'initInjectorCentral' and 'initInjectorCentral' in order to
@@ -525,19 +530,19 @@ void initEngineContoller(Engine *engine) {
 	initElectronicThrottle();
 #endif /* EFI_ELECTRONIC_THROTTLE_BODY */
 
-#if EFI_MALFUNCTION_INDICATOR
+#if EFI_MALFUNCTION_INDICATOR || defined(__DOXYGEN__)
 	if (engineConfiguration->isMilEnabled) {
 		initMalfunctionIndicator(engine);
 	}
 #endif /* EFI_MALFUNCTION_INDICATOR */
 
-#if EFI_MAP_AVERAGING
+#if EFI_MAP_AVERAGING || defined(__DOXYGEN__)
 	if (engineConfiguration->isMapAveragingEnabled) {
 		initMapAveraging(engine);
 	}
 #endif /* EFI_MAP_AVERAGING */
 
-#if EFI_ENGINE_CONTROL
+#if EFI_ENGINE_CONTROL || defined(__DOXYGEN__)
 	if (boardConfiguration->isEngineControlEnabled) {
 		/**
 		 * This method initialized the main listener which actually runs injectors & ignition
@@ -546,12 +551,10 @@ void initEngineContoller(Engine *engine) {
 	}
 #endif /* EFI_ENGINE_CONTROL */
 
-#if EFI_IDLE_CONTROL
+#if EFI_IDLE_CONTROL || defined(__DOXYGEN__)
 	if (engineConfiguration->isIdleThreadEnabled) {
 		startIdleThread(engine);
 	}
-#else
-	scheduleMsg(&logger, "no idle control");
 #endif
 
 #if EFI_FUEL_PUMP
diff --git a/firmware/controllers/injector_central.cpp b/firmware/controllers/injector_central.cpp
index 8ac3bc4f49..27c6858377 100644
--- a/firmware/controllers/injector_central.cpp
+++ b/firmware/controllers/injector_central.cpp
@@ -20,8 +20,11 @@
  * If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "injector_central.h"
 #include "main.h"
+
+#if EFI_ENGINE_CONTROL || defined(__DOXYGEN__)
+
+#include "injector_central.h"
 #include "io_pins.h"
 #include "signal_executor.h"
 #include "main_trigger_callback.h"
@@ -231,3 +234,5 @@ void initInjectorCentral(Engine *engine) {
 	addConsoleActionSSSSS("fuelbench2", fuelbench2);
 	addConsoleActionSSSSS("sparkbench2", sparkbench2);
 }
+
+#endif
diff --git a/firmware/controllers/system/efiGpio.cpp b/firmware/controllers/system/efiGpio.cpp
index 0035fa509d..9d8a8ab6fd 100644
--- a/firmware/controllers/system/efiGpio.cpp
+++ b/firmware/controllers/system/efiGpio.cpp
@@ -6,9 +6,11 @@
  */
 
 #include "main.h"
+#if EFI_GPIO
 #include "efiGpio.h"
 #include "io_pins.h"
 
+
 // todo: clean this mess, this should become 'static'/private
 OutputPin outputs[IO_PIN_COUNT];
 pin_output_mode_e *pinDefaultState[IO_PIN_COUNT];
@@ -99,3 +101,4 @@ void setOutputPinValue(io_pin_e pin, int logicValue) {
 	doSetOutputPinValue(pin, logicValue);
 }
 
+#endif /* EFI_GPIO */
diff --git a/firmware/controllers/trigger/trigger_emulator_algo.cpp b/firmware/controllers/trigger/trigger_emulator_algo.cpp
index 617c6fcf79..9fe2f1dce2 100644
--- a/firmware/controllers/trigger/trigger_emulator_algo.cpp
+++ b/firmware/controllers/trigger/trigger_emulator_algo.cpp
@@ -5,6 +5,9 @@
  * @author Andrey Belomutskiy, (c) 2012-2014
  */
 #include "main.h"
+
+#if EFI_EMULATE_POSITION_SENSORS || defined(__DOXYGEN__)
+
 #include "trigger_emulator_algo.h"
 #include "engine_configuration.h"
 #include "LocalVersionHolder.h"
@@ -104,8 +107,6 @@ static void updateTriggerShapeIfNeeded(PwmConfig *state) {
 
 static TriggerEmulatorHelper helper;
 
-#if EFI_EMULATE_POSITION_SENSORS || defined(__DOXYGEN__)
-
 static void emulatorApplyPinState(PwmConfig *state, int stateIndex) {
 	if (stopEmulationAtIndex == stateIndex) {
 		isEmulating = false;
diff --git a/firmware/dump_debug_egt.bat b/firmware/dump_debug_egt.bat
new file mode 100644
index 0000000000..28fc269679
--- /dev/null
+++ b/firmware/dump_debug_egt.bat
@@ -0,0 +1 @@
+arm-none-eabi-objdump -S debug_EGT2CAN/rusefi.elf > debug.dump
\ No newline at end of file
diff --git a/firmware/hw_layer/io_pins.c b/firmware/hw_layer/io_pins.c
index bf7fbf8fb9..e7459e37e2 100644
--- a/firmware/hw_layer/io_pins.c
+++ b/firmware/hw_layer/io_pins.c
@@ -17,7 +17,7 @@
 #include "engine_configuration.h"
 #include "console_io.h"
 
-#if EFI_ENGINE_CONTROL
+#if EFI_ENGINE_CONTROL || defined(__DOXYGEN__)
 #include "main_trigger_callback.h"
 #endif /* EFI_ENGINE_CONTROL */
 
@@ -183,6 +183,8 @@ void initOutputPins(void) {
 	addConsoleActionS("get_pin_value", getPinValue);
 }
 
+#if EFI_GPIO
+
 static io_pin_e TO_BE_TURNED_OFF_ON_ERROR[] = { SPARKOUT_1_OUTPUT, SPARKOUT_2_OUTPUT, SPARKOUT_3_OUTPUT,
 		SPARKOUT_4_OUTPUT, SPARKOUT_5_OUTPUT, SPARKOUT_6_OUTPUT, SPARKOUT_7_OUTPUT, SPARKOUT_8_OUTPUT,
 		SPARKOUT_9_OUTPUT, SPARKOUT_10_OUTPUT, SPARKOUT_11_OUTPUT, SPARKOUT_12_OUTPUT,
@@ -202,4 +204,4 @@ void turnAllPinsOff(void) {
 		turnOutputPinOff(l);
 	}
 }
-
+#endif
diff --git a/firmware/hw_layer/rtc_helper.c b/firmware/hw_layer/rtc_helper.c
index 68efa39b23..35a7dfbfcc 100644
--- a/firmware/hw_layer/rtc_helper.c
+++ b/firmware/hw_layer/rtc_helper.c
@@ -13,9 +13,9 @@
 #include "chrtclib.h"
 #include "rtc_helper.h"
 
+#if EFI_RTC
 static Logging logger;
 
-#if EFI_RTC
 static void date_help(void) {
 	scheduleMsg(&logger, "Usage: date_help");
 	scheduleMsg(&logger, "       date_get");
@@ -130,8 +130,8 @@ static void date_set(char *strDate) {
 #endif /* EFI_RTC */
 
 void initRtc(void) {
-	initLogging(&logger, "rtc");
 #if EFI_RTC
+	initLogging(&logger, "rtc");
 	printMsg(&logger, "initRtc()");
 
 	// yes, it's my begin time  and we always start from this one 1391894433 - 2014-02-08 21:20:03
diff --git a/unit_tests/efifeatures.h b/unit_tests/efifeatures.h
index d3e1f5b818..ee203869fe 100644
--- a/unit_tests/efifeatures.h
+++ b/unit_tests/efifeatures.h
@@ -10,6 +10,10 @@
 
 #define EFI_ENABLE_ASSERTS TRUE
 
+#define EFI_GPIO TRUE
+
+#define EFI_FSIO TRUE
+
 #define EFI_HISTOGRAMS TRUE
 
 #define EFI_CLI_SUPPORT FALSE
diff --git a/win32_functional_tests/simulator/efifeatures.h b/win32_functional_tests/simulator/efifeatures.h
index 8da46ba544..aab8aae86e 100644
--- a/win32_functional_tests/simulator/efifeatures.h
+++ b/win32_functional_tests/simulator/efifeatures.h
@@ -10,6 +10,10 @@
 
 #define EFI_ENABLE_ASSERTS TRUE
 
+#define EFI_GPIO TRUE
+
+#define EFI_FSIO TRUE
+
 #define EFI_SIMULATOR TRUE
 
 #define EFI_SUPPORT_DODGE_NEON TRUE