diff --git a/firmware/config/boards/hellen/alphax-4chan/board_configuration.cpp b/firmware/config/boards/hellen/alphax-4chan/board_configuration.cpp
index 46230c04ac..f80ca5f4de 100644
--- a/firmware/config/boards/hellen/alphax-4chan/board_configuration.cpp
+++ b/firmware/config/boards/hellen/alphax-4chan/board_configuration.cpp
@@ -224,6 +224,10 @@ static Gpio OUTPUTS[] = {
 		Gpio::H144_LS_2,
 		Gpio::H144_LS_3,
 		Gpio::H144_LS_4,
+		// vvt1
+		Gpio::H144_IGN_7,
+		// vvt2
+		Gpio::H144_IGN_8,
 };
 
 int getBoardMetaOutputsCount() {
diff --git a/firmware/config/boards/proteus/board_configuration.cpp b/firmware/config/boards/proteus/board_configuration.cpp
index d32f9db008..cf43b171ff 100644
--- a/firmware/config/boards/proteus/board_configuration.cpp
+++ b/firmware/config/boards/proteus/board_configuration.cpp
@@ -201,6 +201,10 @@ void boardPrepareForStop() {
 	palEnableLineEvent(PAL_LINE(GPIOD, 0), PAL_EVENT_MODE_RISING_EDGE);
 }
 
+int getBoardMetaLowSideOutputsCount() {
+    return 16;
+}
+
 int getBoardMetaOutputsCount() {
     return efi::size(PROTEUS_OUTPUTS);
 }
diff --git a/firmware/controllers/algo/engine_configuration.cpp b/firmware/controllers/algo/engine_configuration.cpp
index b5b3197776..2e17698fcf 100644
--- a/firmware/controllers/algo/engine_configuration.cpp
+++ b/firmware/controllers/algo/engine_configuration.cpp
@@ -1060,4 +1060,6 @@ __attribute__((weak)) void setBoardConfigOverrides() { }
 __attribute__((weak)) void onBoardStandBy() { }
 
 __attribute__((weak)) int getBoardMetaOutputsCount() { return 0; }
+// default implementation: treat all outputs as low side
+__attribute__((weak)) int getBoardMetaLowSideOutputsCount() { return getBoardMetaOutputsCount(); }
 __attribute__((weak)) Gpio* getBoardMetaOutputs() { return nullptr; }
diff --git a/firmware/controllers/algo/engine_configuration.h b/firmware/controllers/algo/engine_configuration.h
index bd006349b5..3a25136c35 100644
--- a/firmware/controllers/algo/engine_configuration.h
+++ b/firmware/controllers/algo/engine_configuration.h
@@ -97,5 +97,7 @@ extern bool isActiveConfigurationVoid;
 
 #define isPinOrModeChanged(pin, mode) (isConfigurationChanged(pin) || isConfigurationChanged(mode))
 
+// total number of outputs: low side + high side
 int getBoardMetaOutputsCount();
+int getBoardMetaLowSideOutputsCount();
 Gpio* getBoardMetaOutputs();
diff --git a/firmware/controllers/can/can_bench_test.cpp b/firmware/controllers/can/can_bench_test.cpp
index 15ea83a46e..29b8cfe0be 100644
--- a/firmware/controllers/can/can_bench_test.cpp
+++ b/firmware/controllers/can/can_bench_test.cpp
@@ -98,6 +98,7 @@ static void sendOutBoardMeta() {
 	msg[0] = CAN_BENCH_HEADER;
 	msg[1] = 0;
 	msg[2] = getBoardMetaOutputsCount();
+	msg[3] = getBoardMetaLowSideOutputsCount();
 #endif // EFI_PROD_CODE
 }