https://rusefi.com/forum/viewtopic.php?f=5&t=2353

firmware/CHANGELOG.md

@@ -25,6 +25,7 @@ Release template (copy/paste this for new release):
 
 ### Added
  - verbose trigger sync should reuse engineSnifferRpmThreshold #4259
+ - Subaru EZ30 variation of 36/2/2/2 trigger
 
 ### Fixed
  - Improved logic used to disambiguate trigger sync using cam/VVT information. Engine now runs in wasted spark until cam sync is achieved, at which point it switches to fully sequential. #4099

firmware/controllers/algo/auto_generated_enginetypes.cpp

@@ -400,8 +400,8 @@ case TT_DODGE_RAM:
   return "TT_DODGE_RAM";
 case TT_DODGE_STRATUS:
   return "TT_DODGE_STRATUS";
-case TT_EZ30:
-  return "TT_EZ30";
+case TT_SUBARU_EZ30:
+  return "TT_SUBARU_EZ30";
 case TT_FIAT_IAW_P8:
   return "TT_FIAT_IAW_P8";
 case TT_FORD_ASPIRE:

firmware/controllers/algo/engine_types.h

@@ -502,7 +502,7 @@ typedef enum {
 	// GM 24x with 3/12 degree gaps
 	TT_GM_24x_2 = 74,
 
-	TT_EZ30 = 12,
+	TT_SUBARU_EZ30 = 12,
 	UNUSED_13 = 13,
 	UNUSED_21 = 21,
 	UNUSED_34 = 34,

firmware/controllers/trigger/decoders/trigger_structure.cpp

@@ -684,7 +684,10 @@ void TriggerWaveform::initializeTriggerWaveform(operation_mode_e triggerOperatio
 		configureHondaK_12_1(this);
 		break;
 
-	case TT_EZ30:
+	case TT_SUBARU_EZ30:
+		initializeSubaruEZ30(this);
+		break;
+
 	case UNUSED_13:
 	case UNUSED_21:
 	case UNUSED_34:

firmware/controllers/trigger/decoders/trigger_subaru.cpp

@@ -9,11 +9,7 @@
 
 #include "trigger_subaru.h"
 
-/**
- * This trigger is also used by Nissan and Mazda
- * https://rusefi.com/forum/viewtopic.php?f=2&t=1932
- */
-void initialize36_2_2_2(TriggerWaveform *s) {
+static void initialize_one_of_36_2_2_2(TriggerWaveform *s, int firstCount, int secondCount, bool hasRotaryRelevance) {
 	s->initialize(FOUR_STROKE_CRANK_SENSOR);
 
 #if EFI_UNIT_TEST
@@ -30,7 +26,7 @@ void initialize36_2_2_2(TriggerWaveform *s) {
 
 	float base = 0;
 
-	for (int i = 0; i < 12; i++) {
+	for (int i = 0; i < firstCount; i++) {
 		s->addEvent720(base + narrow / 2, T_PRIMARY, TV_FALL);
 		s->addEvent720(base + narrow, T_PRIMARY, TV_RISE);
 		base += narrow;
@@ -40,7 +36,7 @@ void initialize36_2_2_2(TriggerWaveform *s) {
 	s->addEvent720(base + wide, T_PRIMARY, TV_RISE);
 	base += wide;
 
-	for (int i = 0; i < 15; i++) {
+	for (int i = 0; i < secondCount; i++) {
 		s->addEvent720(base + narrow / 2, T_PRIMARY, TV_FALL);
 		s->addEvent720(base + narrow, T_PRIMARY, TV_RISE);
 		base += narrow;
@@ -54,6 +50,18 @@ void initialize36_2_2_2(TriggerWaveform *s) {
 	s->useOnlyPrimaryForSync = true;
 }
 
+/**
+ * This trigger is also used by Nissan and Mazda
+ * https://rusefi.com/forum/viewtopic.php?f=2&t=1932
+ */
+void initialize36_2_2_2(TriggerWaveform *s) {
+	initialize_one_of_36_2_2_2(s, 12, 15, true);
+}
+
+void initializeSubaruEZ30(TriggerWaveform *s) {
+	initialize_one_of_36_2_2_2(s, 18, 9, true);
+}
+
 static void initializeSubaru7_6(TriggerWaveform *s, bool withCrankWheel) {
 	s->initialize(FOUR_STROKE_CAM_SENSOR);
 

firmware/controllers/trigger/decoders/trigger_subaru.h

@@ -13,4 +13,4 @@ void initialize36_2_2_2(TriggerWaveform *s);
 void initializeSubaru7_6(TriggerWaveform *s);
 void initializeSubaruOnly7(TriggerWaveform *s);
 void initializeSubaru_SVX(TriggerWaveform *s);
-
+void initializeSubaruEZ30(TriggerWaveform *s);