diff --git a/firmware/config/boards/hellen/hellen128/connectors/main.yaml b/firmware/config/boards/hellen/hellen128/connectors/main.yaml
index 8707829491..e1f0202ea5 100644
--- a/firmware/config/boards/hellen/hellen128/connectors/main.yaml
+++ b/firmware/config/boards/hellen/hellen128/connectors/main.yaml
@@ -404,17 +404,19 @@ pins:
     type: gnd
 
   - pin: E25
+# H144_LS_7
     id: GPIOF_13
     class: outputs
-    ts_name: E25 - INJ 7
-    function: injector output 7
+    ts_name: INJ E25
+    function: injector output E25
     type: inj
 
   - pin: E26
+# H144_LS_8
     id: GPIOF_14
     class: outputs
-    ts_name: E26 - INJ 8
-    function: injector output 8
+    ts_name: INJ E26
+    function: injector output E26
     type: inj
 
   - pin: E27
diff --git a/firmware/config/engines/mercedes.cpp b/firmware/config/engines/mercedes.cpp
index 1340dcedb9..79e09503f3 100644
--- a/firmware/config/engines/mercedes.cpp
+++ b/firmware/config/engines/mercedes.cpp
@@ -15,6 +15,15 @@ static void common() {
 
 void setHellenMercedes128_4_cyl() {
     common();
+
+	engineConfiguration->injectionPins[0] = H144_LS_7;
+	engineConfiguration->injectionPins[1] = H176_LS_6;
+	engineConfiguration->injectionPins[2] = H176_LS_8;
+	engineConfiguration->injectionPins[3] = H176_LS_5;
+	engineConfiguration->injectionPins[4] = GPIO_UNASSIGNED;
+	engineConfiguration->injectionPins[5] = GPIO_UNASSIGNED;
+	engineConfiguration->injectionPins[6] = GPIO_UNASSIGNED;
+	engineConfiguration->injectionPins[7] = GPIO_UNASSIGNED;
 }
 
 // is this M104 or M112 or both?