diff --git a/firmware/config/boards/hellen/cypress/board.h b/firmware/config/boards/hellen/cypress/board.h
index ed2b6dc1fe..d207b049ad 100644
--- a/firmware/config/boards/hellen/cypress/board.h
+++ b/firmware/config/boards/hellen/cypress/board.h
@@ -25,7 +25,6 @@ extern "C" {
 #endif
   void boardInit(void);
   void setPinConfigurationOverrides(void);
-  void setSerialConfigurationOverrides(void);
   void setAdcChannelOverrides(void);
 
 /**
diff --git a/firmware/config/boards/hellen/cypress/board_configuration.cpp b/firmware/config/boards/hellen/cypress/board_configuration.cpp
index c6163490f3..8e4d5b587d 100644
--- a/firmware/config/boards/hellen/cypress/board_configuration.cpp
+++ b/firmware/config/boards/hellen/cypress/board_configuration.cpp
@@ -107,27 +107,12 @@ void setBoardDefaultConfiguration() {
 	
 	engineConfiguration->adcVcc = 5.0f;
 	engineConfiguration->analogInputDividerCoefficient = 1;
-
-	// we call it here because setDefaultBoardConfiguration() is not called for DEFAULT_ENGINE_TYPE=MINIMAL_PINS
-	setSerialConfigurationOverrides();
 #endif
 
 	//!!!!!!!!!!!!!!!!!!!
 	//engineConfiguration->isFastAdcEnabled = false;
 }
 
-void setSerialConfigurationOverrides() {
-#if 0
-	engineConfiguration->useSerialPort = true;
-	engineConfiguration->binarySerialTxPin = Gpio::C7;
-	engineConfiguration->binarySerialRxPin = Gpio::C6;
-	engineConfiguration->consoleSerialTxPin = Gpio::A10;
-	engineConfiguration->consoleSerialRxPin = Gpio::A11;
-	engineConfiguration->tunerStudioSerialSpeed = SERIAL_SPEED;
-	engineConfiguration->uartConsoleSerialSpeed = SERIAL_SPEED;
-#endif
-}
-
 void setAdcChannelOverrides() {
 	addAdcChannelForTrigger();
 }
diff --git a/firmware/config/boards/hellen/harley81/board_configuration.cpp b/firmware/config/boards/hellen/harley81/board_configuration.cpp
index 26463880ad..d8f2d57bb0 100644
--- a/firmware/config/boards/hellen/harley81/board_configuration.cpp
+++ b/firmware/config/boards/hellen/harley81/board_configuration.cpp
@@ -147,15 +147,6 @@ void setBoardConfigOverrides() {
 	engineConfiguration->canRxPin = Gpio::D0;
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/hellen/hellen-gm-e67/board_configuration.cpp b/firmware/config/boards/hellen/hellen-gm-e67/board_configuration.cpp
index bb71c281c0..d7a1ffc6e2 100644
--- a/firmware/config/boards/hellen/hellen-gm-e67/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen-gm-e67/board_configuration.cpp
@@ -125,11 +125,6 @@ void setBoardConfigOverrides() {
 
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/hellen/hellen-nb1/board_configuration.cpp b/firmware/config/boards/hellen/hellen-nb1/board_configuration.cpp
index 7a47e1353f..a655024f72 100644
--- a/firmware/config/boards/hellen/hellen-nb1/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen-nb1/board_configuration.cpp
@@ -100,11 +100,6 @@ void setBoardConfigOverrides() {
 	}
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/hellen/hellen121nissan/board_configuration.cpp b/firmware/config/boards/hellen/hellen121nissan/board_configuration.cpp
index ffda5d29d9..d427f79f64 100644
--- a/firmware/config/boards/hellen/hellen121nissan/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen121nissan/board_configuration.cpp
@@ -98,15 +98,6 @@ void setBoardConfigOverrides() {
 	engineConfiguration->iat.config.bias_resistor = 4700;
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/hellen/hellen121vag/board_configuration.cpp b/firmware/config/boards/hellen/hellen121vag/board_configuration.cpp
index 6751199506..a6cbaa3c64 100644
--- a/firmware/config/boards/hellen/hellen121vag/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen121vag/board_configuration.cpp
@@ -108,15 +108,6 @@ void setBoardConfigOverrides() {
 	engineConfiguration->canRxPin = Gpio::D0;
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/hellen/hellen128/board_configuration.cpp b/firmware/config/boards/hellen/hellen128/board_configuration.cpp
index a0471562ae..34f81bdb62 100644
--- a/firmware/config/boards/hellen/hellen128/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen128/board_configuration.cpp
@@ -161,15 +161,6 @@ void setBoardConfigOverrides() {
 	engineConfiguration->canRxPin = H176_CAN_RX;
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/hellen/hellen154hyundai/board_configuration.cpp b/firmware/config/boards/hellen/hellen154hyundai/board_configuration.cpp
index ef031b9e5f..96269b80ba 100644
--- a/firmware/config/boards/hellen/hellen154hyundai/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen154hyundai/board_configuration.cpp
@@ -123,15 +123,6 @@ void setBoardConfigOverrides() {
 	}
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/hellen/hellen64_miataNA6_94/board_configuration.cpp b/firmware/config/boards/hellen/hellen64_miataNA6_94/board_configuration.cpp
index d1a4bacc12..74d0cf3c5d 100644
--- a/firmware/config/boards/hellen/hellen64_miataNA6_94/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen64_miataNA6_94/board_configuration.cpp
@@ -101,15 +101,6 @@ void setBoardConfigOverrides() {
 	engineConfiguration->canRxPin = H176_CAN_RX;
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/hellen/hellen72/board_configuration.cpp b/firmware/config/boards/hellen/hellen72/board_configuration.cpp
index db97ebb5bf..87772ba8e9 100644
--- a/firmware/config/boards/hellen/hellen72/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen72/board_configuration.cpp
@@ -106,15 +106,6 @@ void setBoardConfigOverrides() {
 	engineConfiguration->canRxPin = Gpio::D0;
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/hellen/hellen81/board_configuration.cpp b/firmware/config/boards/hellen/hellen81/board_configuration.cpp
index a6964dd1e1..251a7fb57f 100644
--- a/firmware/config/boards/hellen/hellen81/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen81/board_configuration.cpp
@@ -115,15 +115,6 @@ void setBoardConfigOverrides() {
 	engineConfiguration->canRxPin = Gpio::D0;
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/hellen/hellen88bmw/board_configuration.cpp b/firmware/config/boards/hellen/hellen88bmw/board_configuration.cpp
index 597b2454a8..d08a551e8f 100644
--- a/firmware/config/boards/hellen/hellen88bmw/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen88bmw/board_configuration.cpp
@@ -95,15 +95,6 @@ void setBoardConfigOverrides() {
 	engineConfiguration->iat.config.bias_resistor = 4700;
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/hellen/hellenNA8_96/board_configuration.cpp b/firmware/config/boards/hellen/hellenNA8_96/board_configuration.cpp
index 748c2bdb50..659fdda783 100644
--- a/firmware/config/boards/hellen/hellenNA8_96/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellenNA8_96/board_configuration.cpp
@@ -102,15 +102,6 @@ void setBoardConfigOverrides() {
 	engineConfiguration->etbIo[0].controlPin = Gpio::C6;		// PWM 2
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/kinetis/board_configuration.cpp b/firmware/config/boards/kinetis/board_configuration.cpp
index e667bbcf8a..ae08a6619d 100644
--- a/firmware/config/boards/kinetis/board_configuration.cpp
+++ b/firmware/config/boards/kinetis/board_configuration.cpp
@@ -86,7 +86,6 @@ void setBoardOverrides() {
 }
 
 void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = true;
 	engineConfiguration->binarySerialTxPin = Gpio::C7;
 	engineConfiguration->binarySerialRxPin = Gpio::C6;
 //	engineConfiguration->consoleSerialTxPin = Gpio::A10;
diff --git a/firmware/config/boards/microrusefi/board_configuration.cpp b/firmware/config/boards/microrusefi/board_configuration.cpp
index 277704b36c..90a9045db6 100644
--- a/firmware/config/boards/microrusefi/board_configuration.cpp
+++ b/firmware/config/boards/microrusefi/board_configuration.cpp
@@ -174,12 +174,6 @@ void setBoardConfigOverrides() {
 	engineConfiguration->spi3sckPin = Gpio::C10;
 }
 
-void setSerialConfigurationOverrides() {
-	// why would MRE disable serial by default? we definitely have pads exposed
-	engineConfiguration->useSerialPort = false;
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/nucleo_f767/board_configuration.cpp b/firmware/config/boards/nucleo_f767/board_configuration.cpp
index ed3f21c0e2..d1b44e145d 100644
--- a/firmware/config/boards/nucleo_f767/board_configuration.cpp
+++ b/firmware/config/boards/nucleo_f767/board_configuration.cpp
@@ -13,22 +13,15 @@
 #undef SERIAL_SPEED
 #define SERIAL_SPEED 115200
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = true;
-	engineConfiguration->binarySerialTxPin = Gpio::D8;
-	engineConfiguration->binarySerialRxPin = Gpio::D9;
-//	engineConfiguration->consoleSerialTxPin = Gpio::D8;
-//	engineConfiguration->consoleSerialRxPin = Gpio::D9;
-	engineConfiguration->tunerStudioSerialSpeed = SERIAL_SPEED;
-	engineConfiguration->uartConsoleSerialSpeed = SERIAL_SPEED;
-}
-
 /**
  * @brief   Board-specific configuration defaults.
  * @todo    Add your board-specific code, if any.
  */
 void setBoardDefaultConfiguration() {
-	setSerialConfigurationOverrides();
+	engineConfiguration->binarySerialTxPin = Gpio::D8;
+	engineConfiguration->binarySerialRxPin = Gpio::D9;
+	engineConfiguration->tunerStudioSerialSpeed = SERIAL_SPEED;
+	engineConfiguration->uartConsoleSerialSpeed = SERIAL_SPEED;
 
 	engineConfiguration->runningLedPin = Gpio::B0; //green LED
 	engineConfiguration->warningLedPin = Gpio::Unassigned;
diff --git a/firmware/config/boards/prometheus/board_configuration.cpp b/firmware/config/boards/prometheus/board_configuration.cpp
index 967482af24..aba8379d3f 100644
--- a/firmware/config/boards/prometheus/board_configuration.cpp
+++ b/firmware/config/boards/prometheus/board_configuration.cpp
@@ -97,16 +97,6 @@ void setPinConfigurationOverrides() {
 #endif
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = true;
-	engineConfiguration->binarySerialTxPin = Gpio::A0;
-	engineConfiguration->binarySerialRxPin = Gpio::A1;
-//	engineConfiguration->consoleSerialTxPin = Gpio::A0;
-//	engineConfiguration->consoleSerialRxPin = Gpio::A1;
-	engineConfiguration->tunerStudioSerialSpeed = SERIAL_SPEED;
-	engineConfiguration->uartConsoleSerialSpeed = SERIAL_SPEED;
-}
-
 /**
  * @brief   Board-specific configuration defaults.
  * @todo    Add your board-specific code, if any.
@@ -116,7 +106,10 @@ void setBoardDefaultConfiguration() {
 	// TODO: remove it when the bootloader is ready
 	chThdSleepMilliseconds(2000);
 
-	setSerialConfigurationOverrides();
+	engineConfiguration->binarySerialTxPin = Gpio::A0;
+	engineConfiguration->binarySerialRxPin = Gpio::A1;
+	engineConfiguration->tunerStudioSerialSpeed = SERIAL_SPEED;
+	engineConfiguration->uartConsoleSerialSpeed = SERIAL_SPEED;
 
 	engineConfiguration->vbattAdcChannel = EFI_ADC_13;
 	engineConfiguration->tps1_1AdcChannel = is469 ? EFI_ADC_7 : EFI_ADC_14;
diff --git a/firmware/config/boards/proteus/board_configuration.cpp b/firmware/config/boards/proteus/board_configuration.cpp
index e0b4ae7e18..63874c570b 100644
--- a/firmware/config/boards/proteus/board_configuration.cpp
+++ b/firmware/config/boards/proteus/board_configuration.cpp
@@ -154,15 +154,6 @@ void setBoardConfigOverrides() {
 	engineConfiguration->lps25BaroSensorSda = Gpio::B11;
 }
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration defaults.
  *
diff --git a/firmware/config/boards/skeleton/board_configuration.cpp b/firmware/config/boards/skeleton/board_configuration.cpp
index b25333632f..5789c2d5e2 100644
--- a/firmware/config/boards/skeleton/board_configuration.cpp
+++ b/firmware/config/boards/skeleton/board_configuration.cpp
@@ -22,7 +22,6 @@
  * firmware/controllers/algo/engine_configuration.cpp
  *  void setBoardDefaultConfiguration();
  *  void setPinConfigurationOverrides();
- *  void setSerialConfigurationOverrides();
  *
  * Future: Clean up the distinction between these functions.
  */
@@ -108,15 +107,6 @@ static void setupDefaultSensorInputs() {
 }
 
 // Future: configure USART3 for LIN bus and UART4 for console
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
-
-
-
-
-}
-
-
 /**
  * @brief   Board-specific configuration overrides.
  *
diff --git a/firmware/config/boards/subaru_eg33/board_configuration.cpp b/firmware/config/boards/subaru_eg33/board_configuration.cpp
index 44849119d1..b899a5ecc5 100644
--- a/firmware/config/boards/subaru_eg33/board_configuration.cpp
+++ b/firmware/config/boards/subaru_eg33/board_configuration.cpp
@@ -11,8 +11,7 @@
 #include "smart_gpio.h"
 #include "drivers/gpio/mc33810.h"
 
-void setSerialConfigurationOverrides() {
-	engineConfiguration->useSerialPort = false;
+static void setSerialConfigurationOverrides() {
 	engineConfiguration->binarySerialTxPin = Gpio::E1;
 	engineConfiguration->binarySerialRxPin = Gpio::E0;
 	/* actually Bluetooth/WiFi interface */
diff --git a/firmware/config/engines/sachs.cpp b/firmware/config/engines/sachs.cpp
index ba1cf76f78..1aa18b8444 100644
--- a/firmware/config/engines/sachs.cpp
+++ b/firmware/config/engines/sachs.cpp
@@ -31,8 +31,6 @@ void setSachs() {
 	engineConfiguration->trigger.customTotalToothCount = 50;
 	engineConfiguration->trigger.customSkippedToothCount = 2;
 
-	engineConfiguration->useSerialPort = false;
-
 	// Frankenstein analog input #1: PA1 adc1 MAP
 	// Frankenstein analog input #2: PA3 adc3 TPS
 	// Frankenstein analog input #3: PC3 adc13 IAT
diff --git a/firmware/config/stm32f4ems/efifeatures.h b/firmware/config/stm32f4ems/efifeatures.h
index 60a011a084..a45b6a6318 100644
--- a/firmware/config/stm32f4ems/efifeatures.h
+++ b/firmware/config/stm32f4ems/efifeatures.h
@@ -388,11 +388,10 @@
 
 #define AUX_SERIAL_DEVICE (&SD6)
 
-// todo: start using consoleSerialTxPin? Not sure
 #ifndef EFI_CONSOLE_TX_BRAIN_PIN
 #define EFI_CONSOLE_TX_BRAIN_PIN Gpio::C10
 #endif
-// todo: start using consoleSerialRxPin? Not sure
+
 #ifndef EFI_CONSOLE_RX_BRAIN_PIN
 #define EFI_CONSOLE_RX_BRAIN_PIN Gpio::C11
 #endif
diff --git a/firmware/config/stm32f7ems/efifeatures.h b/firmware/config/stm32f7ems/efifeatures.h
index 0106e3dd58..c1e9e8e26e 100644
--- a/firmware/config/stm32f7ems/efifeatures.h
+++ b/firmware/config/stm32f7ems/efifeatures.h
@@ -52,11 +52,9 @@
 
 #define AUX_SERIAL_DEVICE (&SD6)
 
-// todo: start using consoleSerialTxPin? Not sure
 #undef EFI_CONSOLE_TX_BRAIN_PIN
 #define EFI_CONSOLE_TX_BRAIN_PIN Gpio::D8
 
-// todo: start using consoleSerialRxPin? Not sure
 #undef EFI_CONSOLE_RX_BRAIN_PIN
 #define EFI_CONSOLE_RX_BRAIN_PIN Gpio::D9
 
diff --git a/firmware/console/binary/bluetooth.cpp b/firmware/console/binary/bluetooth.cpp
index 293e109e37..f15e117369 100644
--- a/firmware/console/binary/bluetooth.cpp
+++ b/firmware/console/binary/bluetooth.cpp
@@ -174,12 +174,6 @@ void bluetoothStart(bluetooth_module_e moduleType, const char *baudRate, const c
 	static const char *usage = "Usage: bluetooth_hc06 <baud> <name> <pincode>";
 
 	tsChannel = getBluetoothChannel();
-	
-	// if a binary protocol uses USB, we cannot init the bluetooth module!
-	if (!engineConfiguration->useSerialPort) {
-		efiPrintf("Failed! Serial Port connection is disabled!");
-		return;
-	}
 
 	if (btProcessIsStarted) {
 		efiPrintf("The Bluetooth module init procedure is already started and waiting! To cancel it, run \"bluetooth_cancel\" command!");
diff --git a/firmware/console/binary/tunerstudio_io_serial_ports.cpp b/firmware/console/binary/tunerstudio_io_serial_ports.cpp
index 22a4a49cd4..35243dfbca 100644
--- a/firmware/console/binary/tunerstudio_io_serial_ports.cpp
+++ b/firmware/console/binary/tunerstudio_io_serial_ports.cpp
@@ -80,7 +80,7 @@ class SerialTsChannel;
 			efiSetPadMode("Secondary UART TX", engineConfiguration->binarySerialTxPin, PAL_MODE_ALTERNATE(TS_SERIAL_AF));
 #endif /* EFI_PROD_CODE */
 
-			secondaryChannel.start(engineConfiguration->uartConsoleSerialSpeed);
+			secondaryChannel.start(engineConfiguration->tunerStudioSerialSpeed);
 
 			return &secondaryChannel;
 		}
diff --git a/firmware/controllers/algo/engine_configuration.cpp b/firmware/controllers/algo/engine_configuration.cpp
index b87be48ed9..58f39fbde9 100644
--- a/firmware/controllers/algo/engine_configuration.cpp
+++ b/firmware/controllers/algo/engine_configuration.cpp
@@ -280,16 +280,10 @@ void setDefaultBasePins() {
 
 	// set UART pads configuration based on the board
 // needed also by bootloader code
-	engineConfiguration->useSerialPort = true;
 	engineConfiguration->binarySerialTxPin = Gpio::C10;
 	engineConfiguration->binarySerialRxPin = Gpio::C11;
 	engineConfiguration->tunerStudioSerialSpeed = TS_DEFAULT_SPEED;
 	engineConfiguration->uartConsoleSerialSpeed = 115200;
-
-#if EFI_PROD_CODE
-	// call overrided board-specific serial configuration setup, if needed (for custom boards only)
-	setSerialConfigurationOverrides();
-#endif /* EFI_PROD_CODE */
 }
 
 // needed also by bootloader code
@@ -1188,4 +1182,3 @@ void setFrankenso0_1_joystick(engine_configuration_s *engineConfiguration) {
 // These symbols are weak so that a board_configuration.cpp file can override them
 __attribute__((weak)) void setBoardDefaultConfiguration() { }
 __attribute__((weak)) void setBoardConfigOverrides() { }
-__attribute__((weak)) void setSerialConfigurationOverrides() { }
diff --git a/firmware/controllers/settings.cpp b/firmware/controllers/settings.cpp
index b975c7c37c..f5a4564e17 100644
--- a/firmware/controllers/settings.cpp
+++ b/firmware/controllers/settings.cpp
@@ -723,8 +723,6 @@ static void enableOrDisable(const char *param, bool isEnabled) {
 		setIdleMode(isEnabled ? IM_MANUAL : IM_AUTO);
 #endif /* EFI_IDLE_CONTROL */
 #endif /* EFI_PROD_CODE */
-	} else if (strEqualCaseInsensitive(param, "serial")) {
-		engineConfiguration->useSerialPort = isEnabled;
 	} else if (strEqualCaseInsensitive(param, "stepperidle")) {
 		engineConfiguration->useStepperIdle = isEnabled;
 	} else if (strEqualCaseInsensitive(param, "trigger_only_front")) {
diff --git a/firmware/hw_layer/ports/chconf_common.h b/firmware/hw_layer/ports/chconf_common.h
index f3a53ac587..4e3346c603 100644
--- a/firmware/hw_layer/ports/chconf_common.h
+++ b/firmware/hw_layer/ports/chconf_common.h
@@ -46,7 +46,6 @@ extern "C" {
 #endif
   void boardInit(void);
   void setPinConfigurationOverrides(void);
-  void setSerialConfigurationOverrides(void);
   void setAdcChannelOverrides(void);
 #ifdef __cplusplus
 }
diff --git a/firmware/integration/rusefi_config.txt b/firmware/integration/rusefi_config.txt
index 02e794dee8..e6238d4d16 100644
--- a/firmware/integration/rusefi_config.txt
+++ b/firmware/integration/rusefi_config.txt
@@ -755,7 +755,7 @@ bit is_enabled_spi_2
 	bit isEngineControlEnabled
 	bit isHip9011Enabled
 	bit isVerboseAlternator
-	bit useSerialPort
+	bit unused744b8
 	bit useStepperIdle;+This setting should only be used if you have a stepper motor idle valve and a stepper motor driver installed. 
 	
 	bit enabledStep1Limiter
diff --git a/firmware/tunerstudio/rusefi.input b/firmware/tunerstudio/rusefi.input
index 9933e04b27..c4c88483f5 100644
--- a/firmware/tunerstudio/rusefi.input
+++ b/firmware/tunerstudio/rusefi.input
@@ -267,7 +267,6 @@ enable2ndByteCanID = false
      requiresPowerCycle = runningLedPin
      requiresPowerCycle = binarySerialTxPin
      requiresPowerCycle = binarySerialRxPin
-     requiresPowerCycle = useSerialPort
      requiresPowerCycle = tunerStudioSerialSpeed
      requiresPowerCycle = auxSerialRxPin
      requiresPowerCycle = auxSerialTxPin
@@ -3218,10 +3217,9 @@ cmd_set_engine_type_default					= "@@TS_IO_TEST_COMMAND_char@@\x00\x31\x00\x00"
 
 ;			Board->Connection
 	dialog = tsPort, "Calibration Secondary Serial"
-		field = "Use UART/TTL calibration serial?",		useSerialPort
-		field = "tunerStudioSerialSpeed",				tunerStudioSerialSpeed, {useSerialPort == 1}
-		field = "TX pin",                               binarySerialTxPin, {useSerialPort == 1}
-		field = "RX pin",                               binarySerialRxPin, {useSerialPort == 1}
+		field = "tunerStudioSerialSpeed",				tunerStudioSerialSpeed
+		field = "TX pin",                               binarySerialTxPin
+		field = "RX pin",                               binarySerialRxPin
 
 	dialog = canHw1, "Primary CAN"
 		field = "Verbose Can",  verboseCan