diff --git a/src/com/romraider/io/connection/ConnectionManagerFactory.java b/src/com/romraider/io/connection/ConnectionManagerFactory.java
index e00510de..1b6cfe7b 100644
--- a/src/com/romraider/io/connection/ConnectionManagerFactory.java
+++ b/src/com/romraider/io/connection/ConnectionManagerFactory.java
@@ -28,7 +28,7 @@ import static org.apache.log4j.Logger.getLogger;
 
 public final class ConnectionManagerFactory {
     private static final Logger LOGGER = getLogger(ConnectionManagerFactory.class);
-    private static final boolean ENABLE_TIMER = false;
+    private static final boolean ENABLE_TIMER = true;
 
     private ConnectionManagerFactory() {
     }
diff --git a/src/com/romraider/io/j2534/api/J2534ConnectionManager.java b/src/com/romraider/io/j2534/api/J2534ConnectionManager.java
index cdb4d27a..3378d2a6 100644
--- a/src/com/romraider/io/j2534/api/J2534ConnectionManager.java
+++ b/src/com/romraider/io/j2534/api/J2534ConnectionManager.java
@@ -35,7 +35,7 @@ import static org.apache.log4j.Logger.getLogger;
 public final class J2534ConnectionManager implements ConnectionManager {
     private static final Logger LOGGER = getLogger(J2534ConnectionManager.class);
     private final J2534 api = new Old_J2534OpenPort20(PROTOCOL_ISO9141);
-    //    private final J2534 api = new J2534OpenPort20(PROTOCOL_ISO9141);
+    //        private final J2534 api = new J2534OpenPort20(PROTOCOL_ISO9141);
     //    private final J2534 api = proxy(new Old_J2534OpenPort20(PROTOCOL_ISO9141), TimerWrapper.class);
     //    private final J2534 api = proxy(new J2534OpenPort20(PROTOCOL_ISO9141), TimerWrapper.class);
     private int channelId;
diff --git a/src/com/romraider/io/j2534/api/TestJ2534.java b/src/com/romraider/io/j2534/api/TestJ2534.java
index 1bc2e094..fc008be4 100644
--- a/src/com/romraider/io/j2534/api/TestJ2534.java
+++ b/src/com/romraider/io/j2534/api/TestJ2534.java
@@ -30,6 +30,7 @@ import static com.romraider.util.HexUtil.asHex;
 import static com.romraider.util.LogManager.initDebugLogging;
 
 public final class TestJ2534 {
+    //    private static final J2534 api = new Old_J2534OpenPort20(PROTOCOL_ISO9141);
     private static final J2534 api = new J2534OpenPort20(PROTOCOL_ISO9141);
 
     public static void main(String[] args) {
diff --git a/src/com/romraider/io/j2534/op20/Old_J2534OpenPort20.java b/src/com/romraider/io/j2534/op20/Old_J2534OpenPort20.java
index b2efd5fd..9c8f383b 100644
--- a/src/com/romraider/io/j2534/op20/Old_J2534OpenPort20.java
+++ b/src/com/romraider/io/j2534/op20/Old_J2534OpenPort20.java
@@ -157,7 +157,8 @@ public final class Old_J2534OpenPort20 implements J2534 {
     }
 
     private boolean isResponse(PassThruMessage msg) {
-        if (msg.RxStatus != 0x00) return false;
+        if (msg.RxStatus == 0x00) return true;
+        if (msg.RxStatus == 0x01) return true;
         return msg.Timestamp != 0;
     }