diff --git a/Changelog.txt b/Changelog.txt
index 6fedacf3f..1c1023f1b 100644
--- a/Changelog.txt
+++ b/Changelog.txt
@@ -1,6 +1,7 @@
 Version 2.1.144
     Fixed a NPE that would happen involving taming in combat processing
     Updated hu_HU locale (thanks andris155)
+    mmodebug mode now prints some information when fuel efficiency is applied to a furnace
 
 
 
diff --git a/src/main/java/com/gmail/nossr50/listeners/InventoryListener.java b/src/main/java/com/gmail/nossr50/listeners/InventoryListener.java
index bfa1da0ca..bf78964d6 100644
--- a/src/main/java/com/gmail/nossr50/listeners/InventoryListener.java
+++ b/src/main/java/com/gmail/nossr50/listeners/InventoryListener.java
@@ -72,9 +72,22 @@ public class InventoryListener implements Listener {
                     return;
                 }
 
-//                Bukkit.broadcastMessage("Debug: Modifying burn time from - "+event.getBurnTime());
+
+                boolean debugMode = player.isOnline() && UserManager.getPlayer(player).isDebugMode();
+
+                if(debugMode) {
+                    player.sendMessage("FURNACE FUEL EFFICIENCY DEBUG REPORT");
+                    player.sendMessage("Furnace - "+furnace.hashCode());
+                    player.sendMessage("Furnace Type: "+furnaceBlock.getType().toString());
+                    player.sendMessage("Burn Length before Fuel Efficiency is applied - "+event.getBurnTime());
+                }
+
                 event.setBurnTime(UserManager.getPlayer(player).getSmeltingManager().fuelEfficiency(event.getBurnTime()));
-//                Bukkit.broadcastMessage("Debug: New burn time "+event.getBurnTime());
+
+                if(debugMode) {
+                    player.sendMessage("New Furnace Burn Length (after applying fuel efficiency) "+event.getBurnTime());
+                    player.sendMessage("");
+                }
             }
         }