diff --git a/src/main/java/com/rusefi/can/TrcToMlq.java b/src/main/java/com/rusefi/can/TrcToMlq.java
index d52476a..8af6717 100644
--- a/src/main/java/com/rusefi/can/TrcToMlq.java
+++ b/src/main/java/com/rusefi/can/TrcToMlq.java
@@ -11,7 +11,7 @@ import static com.rusefi.can.reader.CANLineReader.getReader;
 
 public class TrcToMlq {
     public static ReaderType parseCurrentReaderTypeSetting() {
-        String property = System.getProperty("TRACE_READER", ReaderType.PCAN2.name());
+        String property = System.getProperty("TRACE_READER", ReaderType.PCAN.name());
         ReaderType readerType = ReaderType.valueOf(property);
         System.out.println("getCurrentReaderType: " + readerType + " for [" + property + "]");
         return readerType;
diff --git a/src/main/java/com/rusefi/can/reader/CANLineReader.java b/src/main/java/com/rusefi/can/reader/CANLineReader.java
index c602aa0..0c4e635 100644
--- a/src/main/java/com/rusefi/can/reader/CANLineReader.java
+++ b/src/main/java/com/rusefi/can/reader/CANLineReader.java
@@ -4,7 +4,7 @@ import com.rusefi.can.CANPacket;
 import com.rusefi.can.reader.impl.CANoeReader;
 import com.rusefi.can.reader.impl.CanHackerReader;
 import com.rusefi.can.reader.impl.PcanTrcReader1_1;
-import com.rusefi.can.reader.impl.PcanTrcReader2_0;
+import com.rusefi.can.reader.impl.*;
 
 import java.io.IOException;
 import java.nio.file.Files;
@@ -31,11 +31,9 @@ public interface CANLineReader {
                 return CANoeReader.INSTANCE;
             case CANHACKER:
                 return CanHackerReader.INSTANCE;
-            case PCAN2:
-                return PcanTrcReader2_0.INSTANCE;
-            case PCAN1_1:
+            case PCAN:
             default:
-                return new PcanTrcReader1_1();
+                return PcanAutoReader.INSTANCE;
         }
     }
 
diff --git a/src/main/java/com/rusefi/can/reader/ReaderType.java b/src/main/java/com/rusefi/can/reader/ReaderType.java
index a8e9f23..a65ff25 100644
--- a/src/main/java/com/rusefi/can/reader/ReaderType.java
+++ b/src/main/java/com/rusefi/can/reader/ReaderType.java
@@ -1,9 +1,7 @@
 package com.rusefi.can.reader;
 
 public enum ReaderType {
-    PCAN1_1,
-    PCAN2,
+    PCAN,
     CANOE,
     CANHACKER,
-
 }
diff --git a/src/main/java/com/rusefi/can/reader/impl/PcanAutoReader.java b/src/main/java/com/rusefi/can/reader/impl/PcanAutoReader.java
new file mode 100644
index 0000000..c7cdc5a
--- /dev/null
+++ b/src/main/java/com/rusefi/can/reader/impl/PcanAutoReader.java
@@ -0,0 +1,45 @@
+package com.rusefi.can.reader.impl;
+
+import com.rusefi.can.CANPacket;
+import com.rusefi.can.reader.CANLineReader;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.List;
+
+public class PcanAutoReader implements CANLineReader {
+    public static final CANLineReader INSTANCE = new PcanAutoReader();
+
+    private CANLineReader delegate;
+
+    @Override
+    public CANPacket readLine(String line) {
+        return delegate.readLine(line);
+    }
+
+    @Override
+    public CANPacket readLine(String line, String fileName) {
+        return delegate.readLine(line, fileName);
+    }
+
+    @Override
+    public List<CANPacket> readFile(String fileName) throws IOException {
+        String firstLine = Files.lines(Paths.get(fileName)).findFirst().get();
+        if (!firstLine.contains(PcanTrcReader2_0.FILEVERSION))
+            throw new IllegalStateException(PcanTrcReader2_0.FILEVERSION + " expected in first line");
+        if (firstLine.contains("1.1")) {
+            delegate = PcanTrcReader1_1.INSTANCE;
+        } else if (firstLine.contains("2.0")) {
+            delegate = PcanTrcReader2_0.INSTANCE;
+        } else {
+            throw new IllegalStateException("Unsupported version in " + firstLine);
+        }
+        return delegate.readFile(fileName);
+    }
+
+    @Override
+    public List<CANPacket> skipHeaderAndRead(String fileName, int skipCount) throws IOException {
+        return delegate.skipHeaderAndRead(fileName, skipCount);
+    }
+}
diff --git a/src/main/java/com/rusefi/can/reader/impl/PcanTrcReader1_1.java b/src/main/java/com/rusefi/can/reader/impl/PcanTrcReader1_1.java
index 621097d..8687c31 100644
--- a/src/main/java/com/rusefi/can/reader/impl/PcanTrcReader1_1.java
+++ b/src/main/java/com/rusefi/can/reader/impl/PcanTrcReader1_1.java
@@ -10,6 +10,8 @@ import static com.rusefi.can.reader.impl.PcanTrcReader2_0.FILEVERSION;
  * TODO: merge these two?
  */
 public class PcanTrcReader1_1 implements CANLineReader {
+    public static final CANLineReader INSTANCE = new PcanTrcReader1_1();
+
     @Override
     public CANPacket readLine(String line, String fileName) {
         line = line.trim();
diff --git a/src/test/java/com/rusefi/can/ByteRateOfChangeNissanSandbox.java b/src/test/java/com/rusefi/can/ByteRateOfChangeNissanSandbox.java
index a1cd304..4c773fa 100644
--- a/src/test/java/com/rusefi/can/ByteRateOfChangeNissanSandbox.java
+++ b/src/test/java/com/rusefi/can/ByteRateOfChangeNissanSandbox.java
@@ -8,7 +8,7 @@ import java.io.IOException;
 
 public class ByteRateOfChangeNissanSandbox {
     public static void main(String[] args) throws IOException {
-        ReaderTypeHolder.INSTANCE.type = ReaderType.PCAN1_1;
+        ReaderTypeHolder.INSTANCE.type = ReaderType.PCAN;
 
         String inputFolderName = "C:\\stuff\\rusefi_documentation\\OEM-Docs\\Nissan\\2011_Xterra\\CAN-Nov-2022";
 
diff --git a/src/test/java/com/rusefi/can/ByteRateOfChangeVagSandbox.java b/src/test/java/com/rusefi/can/ByteRateOfChangeVagSandbox.java
index 2aca801..311e597 100644
--- a/src/test/java/com/rusefi/can/ByteRateOfChangeVagSandbox.java
+++ b/src/test/java/com/rusefi/can/ByteRateOfChangeVagSandbox.java
@@ -8,7 +8,7 @@ import java.io.IOException;
 
 public class ByteRateOfChangeVagSandbox {
     public static void main(String[] args) throws IOException {
-        ReaderTypeHolder.INSTANCE.type = ReaderType.PCAN1_1;
+        ReaderTypeHolder.INSTANCE.type = ReaderType.PCAN;
 
         String inputFolderName = "C:\\stuff\\rusefi_documentation\\OEM-Docs\\VAG\\2006-Passat-B6";
 
diff --git a/src/test/java/com/rusefi/can/CanAmMG1Sandbox.java b/src/test/java/com/rusefi/can/CanAmMG1Sandbox.java
index eed95e2..72d506b 100644
--- a/src/test/java/com/rusefi/can/CanAmMG1Sandbox.java
+++ b/src/test/java/com/rusefi/can/CanAmMG1Sandbox.java
@@ -7,11 +7,10 @@ import com.rusefi.can.reader.ReaderTypeHolder;
 import com.rusefi.can.reader.impl.PcanTrcReader2_0;
 
 import java.io.IOException;
-import java.util.List;
 
 public class CanAmMG1Sandbox {
     public static void main(String[] args) throws IOException {
-        ReaderTypeHolder.INSTANCE.type = ReaderType.PCAN1_1;
+        ReaderTypeHolder.INSTANCE.type = ReaderType.PCAN;
         CANLineReader reader = PcanTrcReader2_0.INSTANCE;
 
 
diff --git a/src/test/java/com/rusefi/can/KiaSandbox.java b/src/test/java/com/rusefi/can/KiaSandbox.java
index fb2708c..d9f0d73 100644
--- a/src/test/java/com/rusefi/can/KiaSandbox.java
+++ b/src/test/java/com/rusefi/can/KiaSandbox.java
@@ -8,7 +8,7 @@ import java.io.IOException;
 
 public class KiaSandbox {
     public static void main(String[] args) throws IOException {
-        ReaderTypeHolder.INSTANCE.type = ReaderType.PCAN2;
+        ReaderTypeHolder.INSTANCE.type = ReaderType.PCAN;
 
         String inputFolderName = "C:\\stuff\\rusefi_documentation\\OEM-Docs\\Kia\\2013-CAN-logs";
 
diff --git a/src/test/java/com/rusefi/can/VagB6Sandbox.java b/src/test/java/com/rusefi/can/VagB6Sandbox.java
index 050ff9a..ad1de0d 100644
--- a/src/test/java/com/rusefi/can/VagB6Sandbox.java
+++ b/src/test/java/com/rusefi/can/VagB6Sandbox.java
@@ -1,6 +1,10 @@
 package com.rusefi.can;
 
+import com.rusefi.can.analysis.ByteRateOfChangeReports;
+import com.rusefi.can.analysis.PerSidDump;
 import com.rusefi.can.reader.CANLineReader;
+import com.rusefi.can.reader.ReaderType;
+import com.rusefi.can.reader.ReaderTypeHolder;
 import com.rusefi.can.reader.dbc.DbcFile;
 import com.rusefi.can.reader.impl.PcanTrcReader1_1;
 import com.rusefi.can.reader.impl.ReadFullVagDbc;
@@ -9,15 +13,32 @@ import com.rusefi.mlv.LoggingStrategy;
 import java.io.IOException;
 import java.util.List;
 
+import static com.rusefi.can.analysis.ByteRateOfChangeReports.createOutputFolder;
+
 public class VagB6Sandbox {
     public static void main(String[] args) throws IOException {
         DbcFile dbc = DbcFile.readFromFile(ReadFullVagDbc.VAG_DBC_FILE);
 
         CANLineReader reader = new PcanTrcReader1_1();
-        String file = "C:\\stuff\\rusefi_documentation\\OEM-Docs\\VAG\\2006-Passat-B6\\passat-back-and-forth-60-seconds.trc1";
+        String inputFolderName = "C:\\stuff\\rusefi_documentation\\OEM-Docs\\VAG\\2006-Passat-B6\\";
+
+        {
+            ReaderTypeHolder.INSTANCE.type = ReaderType.PCAN;
+            ByteRateOfChangeReports.scanInputFolder(inputFolderName + "2023.10-tcu-side2", ".trc");
+        }
+
+
+        String simpleFileName = "passat-back-and-forth-60-seconds.trc1";
+        String file = inputFolderName + simpleFileName;
+
+        String reportDestinationFolder = createOutputFolder(inputFolderName);
+
 
         List<CANPacket> packets = reader.readFile(file);
 
+        PerSidDump.handle(reportDestinationFolder, simpleFileName, packets);
+
+
         String outputFileName = "vag.mlg";
         LoggingStrategy.writeLog(dbc, packets, outputFileName);
     }