diff --git a/firmware/config/boards/hellen/hellen128/board_configuration.cpp b/firmware/config/boards/hellen/hellen128/board_configuration.cpp
index 3aa108edd7..3fdd905976 100644
--- a/firmware/config/boards/hellen/hellen128/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen128/board_configuration.cpp
@@ -28,14 +28,13 @@ static void setInjectorPins() {
 	engineConfiguration->injectionPins[1] = GPIOG_8;
 	engineConfiguration->injectionPins[2] = GPIOD_11;
 	engineConfiguration->injectionPins[3] = GPIOD_10;
-
-	//engineConfiguration->injectionPins[4] = GPIOD_9;
-	//engineConfiguration->injectionPins[5] = GPIOF_12;
-	//engineConfiguration->injectionPins[6] = GPIOF_13;
-	//engineConfiguration->injectionPins[7] = GPIOF_14;
+	engineConfiguration->injectionPins[4] = GPIOD_9;
+	engineConfiguration->injectionPins[5] = GPIOF_12;
+	engineConfiguration->injectionPins[6] = GPIOF_13;
+	engineConfiguration->injectionPins[7] = GPIOF_14;
 
 	// Disable remainder
-	for (int i = 4; i < INJECTION_PIN_COUNT;i++) {
+	for (int i = 8; i < INJECTION_PIN_COUNT;i++) {
 		engineConfiguration->injectionPins[i] = GPIO_UNASSIGNED;
 	}
 
@@ -43,18 +42,17 @@ static void setInjectorPins() {
 }
 
 static void setIgnitionPins() {
-	engineConfiguration->ignitionPins[0] = GPIOI_8; // 3F - IGN_1 (1&4)
-	engineConfiguration->ignitionPins[1] = GPIO_UNASSIGNED ; // GPIOE_4
-	engineConfiguration->ignitionPins[2] = GPIOE_5; // 3I - IGN_2 (2&3)
-	engineConfiguration->ignitionPins[3] = GPIO_UNASSIGNED; // GPIOE_3
-
-	//engineConfiguration->ignitionPins[4] = GPIOE_2;
-	//engineConfiguration->ignitionPins[5] = GPIOI_5;
-	//engineConfiguration->ignitionPins[6] = GPIOI_6;
-	//engineConfiguration->ignitionPins[7] = GPIOI_7;
+	engineConfiguration->ignitionPins[0] = GPIOI_8;
+	engineConfiguration->ignitionPins[1] = GPIOE_5;
+	engineConfiguration->ignitionPins[2] = GPIOE_4;
+	engineConfiguration->ignitionPins[3] = GPIOE_3;
+	engineConfiguration->ignitionPins[4] = GPIOE_2;
+	engineConfiguration->ignitionPins[5] = GPIOI_5;
+	engineConfiguration->ignitionPins[6] = GPIOI_6;
+	engineConfiguration->ignitionPins[7] = GPIOI_7;
 	
 	// disable remainder
-	for (int i = 4; i < IGNITION_PIN_COUNT; i++) {
+	for (int i = 8; i < IGNITION_PIN_COUNT; i++) {
 		engineConfiguration->ignitionPins[i] = GPIO_UNASSIGNED;
 	}
 
@@ -165,10 +163,14 @@ void setBoardDefaultConfiguration(void) {
 
 	engineConfiguration->specs.cylindersCount = 4;
 	engineConfiguration->specs.firingOrder = FO_1_3_4_2;
+	engineConfiguration->specs.displacement = 2.295f;
 
 	engineConfiguration->ignitionMode = IM_INDIVIDUAL_COILS; // IM_WASTED_SPARK
-	engineConfiguration->crankingInjectionMode = IM_SIMULTANEOUS;
-	engineConfiguration->injectionMode = IM_SIMULTANEOUS;//IM_BATCH;// IM_SEQUENTIAL;
+	engineConfiguration->crankingInjectionMode = IM_SEQUENTIAL;
+	engineConfiguration->injectionMode = IM_SEQUENTIAL;//IM_BATCH;// IM_SEQUENTIAL;
+
+	strcpy(CONFIG(engineMake), ENGINE_MAKE_MERCEDES);
+	strcpy(CONFIG(engineCode), "");
 }
 
 /**
diff --git a/firmware/controllers/algo/engine_configuration.cpp b/firmware/controllers/algo/engine_configuration.cpp
index be18d6766a..68aa48a4a9 100644
--- a/firmware/controllers/algo/engine_configuration.cpp
+++ b/firmware/controllers/algo/engine_configuration.cpp
@@ -859,6 +859,7 @@ void resetConfigurationExt(configuration_callback_t boardCallback, engine_type_e
 // todo: is it time to replace MICRO_RUS_EFI, PROTEUS, PROMETHEUS_DEFAULTS with MINIMAL_PINS? maybe rename MINIMAL_PINS to DEFAULT?
 	case PROTEUS_DEFAULTS:
 	case PROMETHEUS_DEFAULTS:
+	case HELLEN_128_MERCEDES:
 	case MINIMAL_PINS:
 		// all basic settings are already set in prepareVoidConfiguration(), no need to set anything here
 		// nothing to do - we do it all in setBoardDefaultConfiguration
@@ -946,7 +947,6 @@ void resetConfigurationExt(configuration_callback_t boardCallback, engine_type_e
 	case HELLEN_121_NISSAN:
 		setHellen121nissan(PASS_CONFIG_PARAMETER_SIGNATURE);
 		break;
-	case HELLEN_128_MERCEDES:
 	case HELLEN_121_VAG:
 	case HELLEN_55_BMW:
 	case HELLEN_88_BMW: