diff --git a/firmware/config/boards/microrusefi/prepend.txt b/firmware/config/boards/microrusefi/prepend.txt
index 9ccfdeab99..b8f924aff9 100644
--- a/firmware/config/boards/microrusefi/prepend.txt
+++ b/firmware/config/boards/microrusefi/prepend.txt
@@ -16,6 +16,7 @@
 #define ts_show_tunerstudio_port false
 #define ts_show_main_relay false
 #define ts_show_main_relay_microRusEFI_message true
+#define ts_show_can2 false
 
 #define show_test_presets false
 #define show_Frankenso_presets false
diff --git a/firmware/config/boards/proteus/prepend.txt b/firmware/config/boards/proteus/prepend.txt
index cf9b16a0f8..f1fee7c112 100644
--- a/firmware/config/boards/proteus/prepend.txt
+++ b/firmware/config/boards/proteus/prepend.txt
@@ -10,3 +10,4 @@
 #define ts_show_sd_card false
 #define ts_show_can_pins false
 #define ts_show_tunerstudio_port false
+#define ts_show_can2 false
\ No newline at end of file
diff --git a/firmware/integration/rusefi_config.txt b/firmware/integration/rusefi_config.txt
index f1644b5809..29283f6954 100644
--- a/firmware/integration/rusefi_config.txt
+++ b/firmware/integration/rusefi_config.txt
@@ -666,7 +666,7 @@ custom adc_channel_mode_e 4 bits,    U32,   @OFFSET@, [0:1], "Off", "Slow", "Fas
 pin_input_mode_e throttlePedalUpPinMode;
 		uint8_t fsio_visible acIdleExtraOffset;+Additional idle PID offset while A/C is active;"Percent", 1, 0, 0, 255, 0
 
-	int unusedAt712;;"units", 1, 0, -20, 100, 0
+	int can2SleepPeriodMs;CANbus thread period, ms;"ms",    1,      0,       0,  1000.0,        2
 	int unusedAt716;;"units", 1, 0, -20, 100, 0
 	int unusedAt720;;"units", 1, 0, -20, 100, 0
 	int unusedAt724;;"units", 1, 0, -20, 100, 0
@@ -829,12 +829,12 @@ custom maf_sensor_type_e 4 bits, S32, @OFFSET@, [0:1], @@maf_sensor_type_e_enum@
 	bit showHumanReadableWarning
 	bit stftIgnoreErrorMagnitude;+If enabled, adjust at a constant rate instead of a rate proportional to the current lambda error.  This mode may be easier to tune, and more tolerant of sensor noise.  Use of this mode is required if you have a narrowband O2 sensor.;
 	bit dcMotorIdleValve;+Used on some German vehicles around late 90s: cable-operated throttle and DC motor idle air valve.\nSet the primary TPS to the cable-operated throttle's sensor\nSet the secondary TPS to the mini ETB's position sensor(s). 
-	bit unusedBit_251_12
-	bit unusedBit_251_13
-	bit unusedBit_251_14
-	bit unusedBit_251_15
-	bit unusedBit_251_16
-	bit unusedBit_251_17
+	brain_pin_e can2TxPin;set_can2_tx_pin X
+	brain_pin_e can2RxPin;set_can2_rx_pin X
+	bit enableVerboseCan2Tx;+CAN broadcast using custom rusEFI protocol\nenable can_broadcast/disable can_broadcast
+	can_nbc_e can2NbcType;set can_mode X
+	bit can2ReadEnabled;enable can_read/disable can_read
+	bit can2WriteEnabled;enable can_write/disable can_write
 	bit unusedBit_251_18
 	bit unusedBit_251_19
 	bit unusedBit_251_20
@@ -1102,7 +1102,12 @@ int16_t tps2Max;Full throttle#2. tpsMax value as 10 bit ADC value. Not Voltage!\
 	custom can_baudrate_e 1 bits, U08, @OFFSET@, [0:1], @@can_baudrate_e_enum@@
 	can_baudrate_e canBaudRate; set can_baudrate
 
-	uint32_t[5] unused_former_warmup_target_afr;;"units", 1, 0, -20, 100, 0
+	uint32_t verboseCan2BaseAddress;;"", 1, 0, 0, 536870911, 0
+	can_baudrate_e can2BaudRate; set can2_baudrate
+	bit unusedBit_251_30
+	bit unusedBit_251_31
+	bit unusedBit_251_32
+	int[31] unused_former_warmup_target_afr;;"units", 1, 0, -20, 100, 0
 
 	float boostCutPressure;kPa value at which we need to cut fuel and spark, 0 if not enabled;"kPa",        1,     0,    0, 500,     0
 
@@ -1676,6 +1681,7 @@ end_struct
 #define ts_show_tunerstudio_port true
 #define ts_show_trigger_comparator false
 #define ts_show_auxserial_pins true
+#define ts_show_can2 true
 
 #define show_test_presets true
 #define show_Frankenso_presets true
diff --git a/firmware/tunerstudio/rusefi.input b/firmware/tunerstudio/rusefi.input
index 3d2730bedc..798fb9fa42 100644
--- a/firmware/tunerstudio/rusefi.input
+++ b/firmware/tunerstudio/rusefi.input
@@ -2541,6 +2541,17 @@ cmd_set_engine_type_default					= "w\x00\x31\x00\x00"
 		field = "RX pin",								canRxPin @@if_ts_show_can_pins
 		field = "TX pin",								canTxPin @@if_ts_show_can_pins
 
+	dialog = canBus2, "Secondary CAN Bus"
+		field = "Can Read Enabled",						can2ReadEnabled
+		field = "Can Write Enabled",					can2WriteEnabled
+		field = "Can Nbc Type",							can2NbcType
+		field = "Can Baud Rate",						can2BaudRate
+		field = "Enable rusEFI CAN broadcast",			enableVerboseCan2Tx
+		field = "rusEfi CAN data base address",			verboseCan2BaseAddress
+		field = "Can Sleep Period",						can2SleepPeriodMs
+		field = "RX pin",								can2RxPin @@if_ts_show_can_pins
+		field = "TX pin",								can2TxPin @@if_ts_show_can_pins
+
 	dialog = auxSerial, "AUX Serial"
 		field = "RX pin",								auxSerialRxPin @@if_ts_show_auxserial_pins
 		field = "TX pin",								auxSerialTxPin @@if_ts_show_auxserial_pins
@@ -2581,6 +2592,7 @@ cmd_set_engine_type_default					= "w\x00\x31\x00\x00"
 		field = "ADC vRef voltage",						adcVcc
 		panel = tsPort							@@if_ts_show_tunerstudio_port
 		panel = canBus
+		panel = canBus2							@@if_ts_show_can2
 		panel = auxSerial
 		panel = sdCard							@@if_ts_show_sd_card
 		panel = gpsReceiver                       @@if_ts_show_gps