diff --git a/firmware/config/boards/microrusefi/mapping.yaml b/firmware/config/boards/microrusefi/mapping.yaml
index 743869e193..11a4ef612a 100644
--- a/firmware/config/boards/microrusefi/mapping.yaml
+++ b/firmware/config/boards/microrusefi/mapping.yaml
@@ -13,12 +13,14 @@ outputs:
   GPIOD_7: "14 - GP Out 5"
   GPIOD_6: "13 - GP Out 6"
 
-  # TLE8888 high current low side
+  # TLE8888 high current low side: IN10
   GPIOE_9:  "7 - Lowside 1"
+  # TLE8888 high current low side: IN9
   GPIOE_10: "3 - Lowside 2"
 
-  # TLE8888 half bridges (pushpull, lowside, or high-low)
+  # TLE8888 half bridges (pushpull, lowside, or high-low)  IN11
   GPIOE_8: "35 - GP Out 1"
+  # TLE8888 half bridges (pushpull, lowside, or high-low)  IN12
   GPIOE_7: "34 - GP Out 2"
   TLE8888_PIN_20: "33 - GP Out 3"
   TLE8888_PIN_21: "43 - GP Out 4"
diff --git a/firmware/config/engines/custom_engine.cpp b/firmware/config/engines/custom_engine.cpp
index 1f2b8a3520..24dcb36a7f 100644
--- a/firmware/config/engines/custom_engine.cpp
+++ b/firmware/config/engines/custom_engine.cpp
@@ -473,10 +473,20 @@ void mreBoardTest(DECLARE_CONFIG_PARAMETER_SIGNATURE) {
 	boardConfiguration->injectionPins[4] = TLE8888_PIN_20;
 	// GPIOE_7: "34 - GP Out 2"
 	boardConfiguration->injectionPins[5] = GPIOE_7;
+
+	// TLE8888 high current low side: IN10
 	// GPIOE_9:  "7 - Lowside 1"
 	boardConfiguration->injectionPins[6] = GPIOE_9;
+
+	// TLE8888 high current low side: IN9
 	// GPIOE_10: "3 - Lowside 2"
-	boardConfiguration->injectionPins[5] = GPIOE_10;
+	boardConfiguration->injectionPins[7] = GPIOE_10;
+
+	// TLE8888 half bridges (pushpull, lowside, or high-low)  IN12
+	// GPIOE_8: "35 - GP Out 1"
+	boardConfiguration->injectionPins[8] = GPIOE_8;
+	// TLE8888_PIN_21: "43 - GP Out 4"
+	boardConfiguration->injectionPins[9] = TLE8888_PIN_21;