diff --git a/java_tools/ConfigDefinition.jar b/java_tools/ConfigDefinition.jar
index 9617102ba5..0889fc0ea7 100644
Binary files a/java_tools/ConfigDefinition.jar and b/java_tools/ConfigDefinition.jar differ
diff --git a/java_tools/configuration_definition/src/main/java/com/rusefi/output/DataLogConsumer.java b/java_tools/configuration_definition/src/main/java/com/rusefi/output/DataLogConsumer.java
index 734c94acd8..d9de403447 100644
--- a/java_tools/configuration_definition/src/main/java/com/rusefi/output/DataLogConsumer.java
+++ b/java_tools/configuration_definition/src/main/java/com/rusefi/output/DataLogConsumer.java
@@ -9,7 +9,6 @@ import org.jetbrains.annotations.NotNull;
 import java.io.CharArrayWriter;
 import java.io.FileWriter;
 import java.io.IOException;
-import java.util.List;
 import java.util.TreeSet;
 
 import static com.rusefi.ConfigField.unquote;
@@ -41,7 +40,8 @@ public class DataLogConsumer implements ConfigurationConsumer {
     @Override
     public void handleEndStruct(ConfigStructure structure) throws IOException {
         if (state.stack.isEmpty()) {
-            DataLogFieldIterator iterator = new DataLogFieldIterator(structure.tsFields, "");
+            PerFieldWithStructuresIterator iterator = new PerFieldWithStructuresIterator(structure.tsFields, "",
+                    this::handle);
             iterator.loop();
             String content = iterator.sb.toString();
             tsWriter.append(content);
@@ -54,36 +54,10 @@ public class DataLogConsumer implements ConfigurationConsumer {
         }
     }
 
-    class DataLogFieldIterator extends FieldIterator {
-        private final String prefix;
-        StringBuilder sb = new StringBuilder();
-
-        public DataLogFieldIterator(List<ConfigField> fields, String prefix) {
-            super(fields);
-            this.prefix = prefix;
-        }
-
-        @Override
-        public void end() {
-            String content = handle(cf, prefix);
-            sb.append(content);
-            super.end();
-        }
-    }
-
     private String handle(ConfigField configField, String prefix) {
         if (configField.getName().contains("unused"))
             return "";
 
-        ConfigStructure cs = configField.getState().structures.get(configField.getType());
-        if (cs != null) {
-            String extraPrefix = cs.withPrefix ? configField.getName() + "_" : "";
-            DataLogFieldIterator fieldIterator = new DataLogFieldIterator(cs.tsFields, extraPrefix);
-            fieldIterator.loop();
-            return fieldIterator.sb.toString();
-        }
-
-
         if (configField.isArray()) {
 
             return "";
@@ -114,7 +88,7 @@ public class DataLogConsumer implements ConfigurationConsumer {
         comment = (comments.length > 0) ? comments[0] : "";
 
         if (comment.isEmpty())
-            comment =  prefix + unquote(configField.getName());
+            comment = prefix + unquote(configField.getName());
 
         if (comment.charAt(0) != '"')
             comment = quote(comment);
diff --git a/java_tools/configuration_definition/src/main/java/com/rusefi/output/GaugeConsumer.java b/java_tools/configuration_definition/src/main/java/com/rusefi/output/GaugeConsumer.java
index 3872fa9f3c..7f01f7f5f0 100644
--- a/java_tools/configuration_definition/src/main/java/com/rusefi/output/GaugeConsumer.java
+++ b/java_tools/configuration_definition/src/main/java/com/rusefi/output/GaugeConsumer.java
@@ -35,8 +35,10 @@ public class GaugeConsumer implements ConfigurationConsumer {
     @Override
     public void handleEndStruct(ConfigStructure structure) throws IOException {
         if (state.stack.isEmpty()) {
-            FieldIterator iterator = new FieldIterator(structure.tsFields);
-            String content = handleFields(structure, iterator, "");
+            PerFieldWithStructuresIterator iterator = new PerFieldWithStructuresIterator(structure.tsFields, "",
+                    this::handle);
+            iterator.loop();
+            String content = iterator.sb.toString();
             charArrayWriter.append(content);
         }
 
@@ -47,26 +49,7 @@ public class GaugeConsumer implements ConfigurationConsumer {
         }
     }
 
-    private String handleFields(ConfigStructure structure, FieldIterator iterator, String prefix) {
-        StringBuilder sb = new StringBuilder();
-        for (int i = 0; i < structure.tsFields.size(); i++) {
-            iterator.start(i);
-
-            String content = handle(iterator.cf, prefix);
-            sb.append(content);
-            iterator.end();
-
-        }
-        return sb.toString();
-    }
-
     private String handle(ConfigField configField, String prefix) {
-        ConfigStructure cs = configField.getState().structures.get(configField.getType());
-        if (cs != null) {
-            String extraPrefix = cs.withPrefix ? configField.getName() + "_" : "";
-            return handleFields(cs, new FieldIterator(cs.tsFields), extraPrefix);
-        }
-
         String comment = getComment("", configField, state.variableRegistry);
         comment = ConfigField.unquote(comment);
         if (!prefix.isEmpty()) {
diff --git a/java_tools/configuration_definition/src/main/java/com/rusefi/output/PerFieldWithStructuresIterator.java b/java_tools/configuration_definition/src/main/java/com/rusefi/output/PerFieldWithStructuresIterator.java
new file mode 100644
index 0000000000..88389887e9
--- /dev/null
+++ b/java_tools/configuration_definition/src/main/java/com/rusefi/output/PerFieldWithStructuresIterator.java
@@ -0,0 +1,37 @@
+package com.rusefi.output;
+
+import com.rusefi.ConfigField;
+
+import java.util.List;
+
+class PerFieldWithStructuresIterator extends FieldIterator {
+    private final String prefix;
+    private final Strategy strategy;
+    StringBuilder sb = new StringBuilder();
+
+    public PerFieldWithStructuresIterator(List<ConfigField> fields, String prefix, Strategy strategy) {
+        super(fields);
+        this.prefix = prefix;
+        this.strategy = strategy;
+    }
+
+    @Override
+    public void end() {
+        ConfigStructure cs = cf.getState().structures.get(cf.getType());
+        String content;
+        if (cs != null) {
+            String extraPrefix = cs.withPrefix ? cf.getName() + "_" : "";
+            PerFieldWithStructuresIterator fieldIterator = new PerFieldWithStructuresIterator(cs.tsFields, extraPrefix, strategy);
+            fieldIterator.loop();
+            content = fieldIterator.sb.toString();
+        } else {
+            content = strategy.process(cf, prefix);
+        }
+        sb.append(content);
+        super.end();
+    }
+
+    interface Strategy {
+        String process(ConfigField configField, String prefix);
+    }
+}