diff --git a/firmware/config/boards/hellen/alphax-8chan/connectors/8chan-A-B.yaml b/firmware/config/boards/hellen/alphax-8chan/connectors/8chan-A-B.yaml
index a21da6fb40..479d035b96 100644
--- a/firmware/config/boards/hellen/alphax-8chan/connectors/8chan-A-B.yaml
+++ b/firmware/config/boards/hellen/alphax-8chan/connectors/8chan-A-B.yaml
@@ -10,14 +10,14 @@ pins:
 
   - pin: 1A
     meta: MM176_IN_CRANK_ANALOG
-    function: Aux Analog 1
+    function: Aux Analog 1 / External MAP
     class: analog_inputs
     ts_name: 1A - Aux Analog 1
     color: blue
 
   - pin: 2A
     meta: MM176_IN_MAP1_ANALOG
-    function: Aux Analog 4 / External MAP
+    function: Aux Analog 4
     class: analog_inputs
     ts_name: 2A - MAP / Aux Analog 4
     color: blue
diff --git a/firmware/config/engines/gm_sbc.cpp b/firmware/config/engines/gm_sbc.cpp
index 14cfcb6e6e..a1d3774d58 100644
--- a/firmware/config/engines/gm_sbc.cpp
+++ b/firmware/config/engines/gm_sbc.cpp
@@ -216,6 +216,6 @@ void setGmSbcGen5() {
   engineConfiguration->camInputs[1] = Gpio::Unassigned;
 
   engineConfiguration->flexSensorPin = Gpio::MM176_IN_SENS3;
-  engineConfiguration->map.sensor.hwChannel = MM176_IN_MAP1_ANALOG; // 2A Aux Analog 4 / External MAP
+  engineConfiguration->map.sensor.hwChannel = MM176_IN_CRANK_ANALOG; // 1A Aux Analog 1. Important to use analog without muxing!
 #endif // HW_HELLEN_8CHAN
 }