diff --git a/firmware/config/boards/microrusefi/board_configuration.cpp b/firmware/config/boards/microrusefi/board_configuration.cpp
index 485d4a0d4c..08365409e8 100644
--- a/firmware/config/boards/microrusefi/board_configuration.cpp
+++ b/firmware/config/boards/microrusefi/board_configuration.cpp
@@ -4,6 +4,13 @@
  *
  * @brief Configuration defaults for the microRusefi board
  *
+ * MICRO_RUS_EFI
+ * set engine_type 60
+ *
+ * MRE_BOARD_TEST
+ * set engine_type 30
+ *
+ *
  * See https://github.com/rusefi/rusefi_documentation/wiki/Hardware_microRusEfi_wiring
  *
  * @author Matthew Kennedy, (c) 2019
diff --git a/firmware/hw_layer/drivers/can/can_msg_tx.cpp b/firmware/hw_layer/drivers/can/can_msg_tx.cpp
index 084c6ce28b..4ed20e37b2 100644
--- a/firmware/hw_layer/drivers/can/can_msg_tx.cpp
+++ b/firmware/hw_layer/drivers/can/can_msg_tx.cpp
@@ -23,11 +23,11 @@ extern LoggingWithStorage sharedLogger;
 	s_device = device;
 }
 
-CanTxMessage::CanTxMessage(uint32_t eid) {
+CanTxMessage::CanTxMessage(uint32_t eid, uint8_t dlc) {
 	m_frame.IDE = CAN_IDE_STD;
 	m_frame.EID = eid;
 	m_frame.RTR = CAN_RTR_DATA;
-	m_frame.DLC = 8;
+	m_frame.DLC = dlc;
 	memset(m_frame.data8, 0, sizeof(m_frame.data8));
 }
 
diff --git a/firmware/hw_layer/drivers/can/can_msg_tx.h b/firmware/hw_layer/drivers/can/can_msg_tx.h
index acdd16bfb8..00ed7da8a5 100644
--- a/firmware/hw_layer/drivers/can/can_msg_tx.h
+++ b/firmware/hw_layer/drivers/can/can_msg_tx.h
@@ -28,7 +28,7 @@ public:
 	/**
 	 * Create a new CAN message, with the specified extended ID.
 	 */
-	CanTxMessage(uint32_t eid);
+	CanTxMessage(uint32_t eid, uint8_t dlc = 8);
 
 	/**
 	 * Destruction of an instance of CanTxMessage will transmit the message over the wire.