diff --git a/firmware/config/engines/canam.cpp b/firmware/config/engines/canam.cpp
index 14a1b20a88..8101e44439 100644
--- a/firmware/config/engines/canam.cpp
+++ b/firmware/config/engines/canam.cpp
@@ -19,7 +19,7 @@ void setMaverickX3() {
 // ?	  engineConfiguration->crankingInjectionMode = IM_SIMULTANEOUS;
 	  engineConfiguration->ignitionMode = IM_INDIVIDUAL_COILS;
 
-
+    // portion of this file was generated by TuneCanTool.java
     engineConfiguration->trigger.type = trigger_type_e::TT_TOOTHED_WHEEL_36_2;
     engineConfiguration->vvtMode[0] = VVT_SINGLE_TOOTH;
     engineConfiguration->isForcedInduction = true;
diff --git a/firmware/config/engines/canam_canned.cpp b/firmware/config/engines/canam_canned.cpp
index aec3fbe037..a53470463b 100644
--- a/firmware/config/engines/canam_canned.cpp
+++ b/firmware/config/engines/canam_canned.cpp
@@ -1,3 +1,4 @@
+// content of this file was generated by TuneCanTool.java
 
 static void cannedsparkDwellValues() {
 	static const float hardCodedsparkDwellValues[8] = {4.0, 3.3, 3.2, 3.1, 3.05, 2.97, 2.88, 2.8};
diff --git a/java_tools/tune-tools/src/main/java/com/rusefi/tools/tune/TuneCanTool.java b/java_tools/tune-tools/src/main/java/com/rusefi/tools/tune/TuneCanTool.java
index be187dec76..81af202718 100644
--- a/java_tools/tune-tools/src/main/java/com/rusefi/tools/tune/TuneCanTool.java
+++ b/java_tools/tune-tools/src/main/java/com/rusefi/tools/tune/TuneCanTool.java
@@ -49,8 +49,10 @@ public class TuneCanTool {
 
         RootHolder.ROOT = "../firmware/";
 
-        writeDiffBetweenLocalTuneFileAndDefaultTune("x", getDefaultTuneName(Fields.engine_type_e_MAVERICK_X3),
-            "C:\\stuff\\i\\canam-2022-short\\canam-progress-pnp-dec-29.msq",  "x");
+        writeDiffBetweenLocalTuneFileAndDefaultTune("example.msq");
+
+        writeDiffBetweenLocalTuneFileAndDefaultTune("vehicleName", getDefaultTuneName(Fields.engine_type_e_MAVERICK_X3),
+            "C:\\stuff\\i\\canam-2022-short\\canam-progress-pnp-dec-29.msq",  "comment");
 
 
 //        processREOtune(1507, Fields.engine_type_e_HELLEN_154_HYUNDAI_COUPE_BK2, "BK2");
@@ -85,6 +87,17 @@ public class TuneCanTool {
 
       writeDiffBetweenLocalTuneFileAndDefaultTune(vehicleName, currentTuneFileName, localFileName, url);
     }
+
+    private static void writeDiffBetweenLocalTuneFileAndDefaultTune(String localFileName) throws JAXBException, IOException {
+        writeDiffBetweenLocalTuneFileAndDefaultTune("vehicleName", DEFAULT_TUNE,
+            localFileName,  "comment");
+    }
+
+    private static void writeDiffBetweenLocalTuneFileAndDefaultTune(int engineCode, String localFileName, String cannedComment) throws JAXBException, IOException {
+        writeDiffBetweenLocalTuneFileAndDefaultTune("vehicleName", getDefaultTuneName(engineCode),
+            localFileName,  cannedComment);
+    }
+
     private static void writeDiffBetweenLocalTuneFileAndDefaultTune(String vehicleName, String defaultTuneFileName, String localFileName, String cannedComment) throws JAXBException, IOException {
         String reportsOutputFolder = "tune_reports";
         new File(reportsOutputFolder).mkdir();