diff --git a/reader/src/main/java/com/rusefi/can/reader/impl/AutoFormatReader.java b/reader/src/main/java/com/rusefi/can/reader/impl/AutoFormatReader.java
index 1785dfb..f298bea 100644
--- a/reader/src/main/java/com/rusefi/can/reader/impl/AutoFormatReader.java
+++ b/reader/src/main/java/com/rusefi/can/reader/impl/AutoFormatReader.java
@@ -26,10 +26,15 @@ public class AutoFormatReader implements CANLineReader {
     @Override
     public List<CANPacket> readFile(String fileName) throws IOException {
         String firstLine = Files.lines(Paths.get(fileName)).findFirst().get();
-        if (!firstLine.contains(PcanTrcReader2_0.FILEVERSION) && !firstLine.contains(CanHackerReader.HEADER))
+        if (!firstLine.contains(PcanTrcReader2_0.FILEVERSION)
+                && !firstLine.contains(CanHackerReader.HEADER)
+                && !firstLine.contains(BusMasterReader.HEADER)
+        )
             throw new IllegalStateException(PcanTrcReader2_0.FILEVERSION + " expected in first line");
         if (firstLine.contains(CanHackerReader.HEADER)) {
             delegate = CanHackerReader.INSTANCE;
+        } else if (firstLine.contains(BusMasterReader.HEADER)) {
+            delegate = BusMasterReader.INSTANCE;
         } else if (firstLine.contains("1.1")) {
             delegate = PcanTrcReader1_1.INSTANCE;
         } else if (firstLine.contains("2.0")) {
@@ -37,7 +42,11 @@ public class AutoFormatReader implements CANLineReader {
         } else {
             throw new IllegalStateException("Unsupported version in " + firstLine);
         }
-        return delegate.readFile(fileName);
+        try {
+            return delegate.readFile(fileName);
+        } catch (Throwable e) {
+            throw new IllegalStateException("While " + fileName, e);
+        }
     }
 
     @Override
diff --git a/reader/src/main/java/com/rusefi/can/reader/impl/BusMasterReader.java b/reader/src/main/java/com/rusefi/can/reader/impl/BusMasterReader.java
new file mode 100644
index 0000000..b8fdb4a
--- /dev/null
+++ b/reader/src/main/java/com/rusefi/can/reader/impl/BusMasterReader.java
@@ -0,0 +1,45 @@
+package com.rusefi.can.reader.impl;
+
+import com.rusefi.can.CANPacket;
+import com.rusefi.can.reader.CANLineReader;
+
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Arrays;
+import java.util.Date;
+
+public enum BusMasterReader implements CANLineReader {
+    INSTANCE;
+
+    public static final CharSequence HEADER = "BUSMASTER Ver 3";
+    final String FORMAT = "HH:mm:ss:SSS";
+    DateFormat formatter = new SimpleDateFormat(FORMAT);
+
+    @Override
+    public CANPacket readLine(String line, String fileName, int lineIndex) {
+        if (line.startsWith("***"))
+            return null;
+        String trimmed = line.trim();
+        if (trimmed.isEmpty())
+            return null;
+        String[] tokens = trimmed.split("\\s+");
+        if (tokens.length < 7)
+            throw new IllegalStateException("Unexpected " + Arrays.toString(tokens));
+        String hexId = tokens[3];
+        String lenghtString = tokens[5];
+
+        int sid = Integer.parseInt(hexId.substring(2), 16);
+        int size = Integer.parseInt(lenghtString);
+
+        long timeStamp;
+        byte[] data = CANLineReader.readHexArray(tokens, 6, size);
+        try {
+            Date date = formatter.parse(tokens[0]);
+            timeStamp = date.getTime();
+        } catch (ParseException e) {
+            throw new RuntimeException(e);
+        }
+        return new CANPacket(timeStamp, sid, data);
+    }
+}
diff --git a/reader/src/test/java/com/rusefi/can/RallySandbox.java b/reader/src/test/java/com/rusefi/can/RallySandbox.java
new file mode 100644
index 0000000..34ab6d9
--- /dev/null
+++ b/reader/src/test/java/com/rusefi/can/RallySandbox.java
@@ -0,0 +1,13 @@
+package com.rusefi.can;
+
+import java.io.IOException;
+
+public class RallySandbox {
+    public static void main(String[] args) throws IOException {
+        Launcher.main(new String[]{
+                "C:\\stuff\\rusefi_documentation\\OEM-Docs\\Mitsubishi\\2009-rallyart",
+                Launcher.FILENAME_SUFFIX_PROPERTY,
+                ".log",
+        });
+    }
+}
diff --git a/reader/src/test/java/com/rusefi/can/reader/impl/BusMasterReaderTest.java b/reader/src/test/java/com/rusefi/can/reader/impl/BusMasterReaderTest.java
new file mode 100644
index 0000000..3e6bce6
--- /dev/null
+++ b/reader/src/test/java/com/rusefi/can/reader/impl/BusMasterReaderTest.java
@@ -0,0 +1,22 @@
+package com.rusefi.can.reader.impl;
+
+import com.rusefi.can.CANPacket;
+import org.junit.Test;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.StringReader;
+
+import static org.junit.Assert.assertEquals;
+
+public class BusMasterReaderTest {
+    @Test
+    public void test() throws IOException {
+        String line = "21:27:52:3456 Rx 1 0x309 s 7 47 D8 7F D4 A8 00 05 ";
+        BufferedReader reader = new BufferedReader(new StringReader(line));
+        CANPacket packet = BusMasterReader.INSTANCE.readLine(reader.readLine());
+        assertEquals(packet.getData().length, 7);
+        assertEquals(packet.getData()[0], 0x47);
+        assertEquals(packet.getData()[6], 0x05);
+    }
+}