diff --git a/firmware/controllers/algo/rusefi_enums.h b/firmware/controllers/algo/rusefi_enums.h
index 40d11a99aa..585dd2e398 100644
--- a/firmware/controllers/algo/rusefi_enums.h
+++ b/firmware/controllers/algo/rusefi_enums.h
@@ -108,6 +108,13 @@ typedef enum  __attribute__ ((__packed__)) {
 	VVT_HONDA_K = 10,
 
 	VVT_NISSAN_MR = 11,
+
+	/**
+	 * MAP sensor gives us pressure drop corresponding to intake stroke of individual cylinder
+	 * Due to uneven cylinder firing on a V-Twin this gives us a decodable virtual two tooth cam sensor.
+	 * Most HD are 45 degrees with some 60 degree twin.
+	 */
+	VVT_MAP_V_TWIN = 12,
 } vvt_mode_e;
 
 /**