diff --git a/firmware/config/boards/hellen/hellen154hyundai/board_configuration.cpp b/firmware/config/boards/hellen/hellen154hyundai/board_configuration.cpp
index 08967b9d57..da745560d9 100644
--- a/firmware/config/boards/hellen/hellen154hyundai/board_configuration.cpp
+++ b/firmware/config/boards/hellen/hellen154hyundai/board_configuration.cpp
@@ -19,16 +19,14 @@ static void hellenWbo() {
 }
 
 static void setInjectorPins() {
-	engineConfiguration->injectionPins[0] = GPIOG_7;
-	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[0] = H144_LS_1;
+	engineConfiguration->injectionPins[1] = H144_LS_2;
+	engineConfiguration->injectionPins[2] = H144_LS_3;
+	engineConfiguration->injectionPins[3] = H144_LS_4;
 
 
 	// Disable remainder
-	for (int i = 6; i < MAX_CYLINDER_COUNT;i++) {
+	for (int i = 4; i < MAX_CYLINDER_COUNT;i++) {
 		engineConfiguration->injectionPins[i] = GPIO_UNASSIGNED;
 	}
 
@@ -40,11 +38,9 @@ static void setIgnitionPins() {
 	engineConfiguration->ignitionPins[1] = GPIOE_5;
 	engineConfiguration->ignitionPins[2] = GPIOE_4;
 	engineConfiguration->ignitionPins[3] = GPIOE_3;
-	engineConfiguration->ignitionPins[4] = GPIOE_2;
-	engineConfiguration->ignitionPins[5] = GPIOB_8;
 	
 	// disable remainder
-	for (int i = 6; i < MAX_CYLINDER_COUNT; i++) {
+	for (int i = 4; i < MAX_CYLINDER_COUNT; i++) {
 		engineConfiguration->ignitionPins[i] = GPIO_UNASSIGNED;
 	}
 
@@ -130,8 +126,8 @@ void setBoardDefaultConfiguration(void) {
 	CONFIG(enableSoftwareKnock) = true;
 	CONFIG(canNbcType) = CAN_BUS_NISSAN_VQ;
 
-	engineConfiguration->canTxPin = GPIOD_1;
-	engineConfiguration->canRxPin = GPIOD_0;
+	engineConfiguration->canTxPin = H176_CAN_TX;
+	engineConfiguration->canRxPin = H176_CAN_RX;
 
 //	engineConfiguration->fuelPumpPin = GPIOG_2;	// OUT_IO9
 //	engineConfiguration->idle.solenoidPin = GPIOD_14;	// OUT_PWM5
@@ -154,14 +150,22 @@ void setBoardDefaultConfiguration(void) {
 	setAlgorithm(LM_SPEED_DENSITY PASS_CONFIG_PARAMETER_SUFFIX);
 
 
-	// Bosch VQ40 VR56 VK56 0280158007
-	engineConfiguration->injector.flow = 296.2;
+	// 2010-2012 315cc at 43.5psi
+	// fuel system is fixed pressure 55psi
+	// 2013+ 450cc at 43.5
+	// fuel system is fixed pressure 85psi
+	// flow rate P2 = flow rate P1 * sqrt(P2/P1)
+	engineConfiguration->injector.flow = 354.19; // https://www.google.com/search?q=315*sqrt%2855%2F43.5%29
+	// todo: split engine generations
+	engineConfiguration->injector.flow = 629.03; // https://www.google.com/search?q=450*sqrt%2885%2F43.5%29
 
-	engineConfiguration->specs.cylindersCount = 6;
-	engineConfiguration->specs.firingOrder = FO_1_2_3_4_5_6;
-	engineConfiguration->specs.displacement = 4;
-	strcpy(CONFIG(engineMake), ENGINE_MAKE_NISSAN);
-	strcpy(CONFIG(engineCode), "VQ");
+	engineConfiguration->injectorCompensationMode = ICM_FixedRailPressure;
+
+	engineConfiguration->specs.cylindersCount = 4;
+	engineConfiguration->specs.firingOrder = FO_1_3_4_2;
+	engineConfiguration->specs.displacement = 1.998;
+	strcpy(CONFIG(engineMake), ENGINE_MAKE_Hyundai);
+	strcpy(CONFIG(engineCode), "Theta II");
 
 	engineConfiguration->ignitionMode = IM_INDIVIDUAL_COILS; // IM_WASTED_SPARK
 	engineConfiguration->crankingInjectionMode = IM_SIMULTANEOUS;
diff --git a/firmware/config/boards/hellen/hellen154hyundai/connectors/main.yaml b/firmware/config/boards/hellen/hellen154hyundai/connectors/main.yaml
index b277f10fd4..1ddb8d5aeb 100644
--- a/firmware/config/boards/hellen/hellen154hyundai/connectors/main.yaml
+++ b/firmware/config/boards/hellen/hellen154hyundai/connectors/main.yaml
@@ -122,6 +122,22 @@ pins:
   - pin: K61
     function: Analog Ground
 
+  - pin: K64
+# H144_OUT_IO3
+    id: GPIOG_14
+    class: outputs
+    ts_name: Main Relay K64
+    function: Main relay control
+    type: ls
+
+  - pin: K70
+# H144_OUT_IO9
+    id: GPIOG_13
+    class: outputs
+    ts_name: Fuel Pump K70
+    function: Fuel Pump Relay
+    type: ls
+
   - pin: K77
     function: CAN bus high
     type: can
@@ -148,7 +164,15 @@ pins:
     ts_name: Tacho
     function: Tachometer
 
+  - pin: K88
+    # H144_OUT_IO8
+    id: GPIOG_4
+    ts_name: Fan Relay HI
+    function: Fan relay high
+
   - pin: K92
+    # H144_OUT_PWM8
+    id: GPIOD_12
     ts_name: MIL
     function: Check Engine Light
 
diff --git a/firmware/config/boards/hellen/hellen_meta.h b/firmware/config/boards/hellen/hellen_meta.h
index 0330615d94..e1490e8867 100644
--- a/firmware/config/boards/hellen/hellen_meta.h
+++ b/firmware/config/boards/hellen/hellen_meta.h
@@ -14,6 +14,16 @@
 #define H144_LS_5 GPIOD_9
 #define H144_LS_6 GPIOF_12
 
+#define H144_OUT_PWM1 GPIOD_13
+#define H144_OUT_PWM2 GPIOC_6
+#define H144_OUT_PWM3 GPIOC_7
+#define H144_OUT_PWM4 GPIOC_8
+#define H144_OUT_PWM5 GPIOC_9
+#define H144_OUT_PWM6 GPIOD_14
+#define H144_OUT_PWM7 GPIOD_15
+#define H144_OUT_PWM8 GPIOD_12
+
+
 #define H144_OUT_IO1 GPIOD_3
 #define H144_OUT_IO2 GPIOA_9
 #define H144_OUT_IO3 GPIOG_14
@@ -44,6 +54,7 @@
 #define H176_OUT_IO9 GPIOI_1
 #define H176_OUT_IO10 GPIOI_0
 
+// same pins 144 and 176
 #define H176_CAN_RX GPIOD_0
 #define H176_CAN_TX GPIOD_1