diff --git a/js/data_storage.js b/js/data_storage.js
index ef80cc9994..f073d19569 100644
--- a/js/data_storage.js
+++ b/js/data_storage.js
@@ -4,7 +4,6 @@ var CONFIGURATOR = {
     'releaseDate': 1409496670288, // 08.31.2014 - new Date().getTime()
     'firmwareVersionAccepted': 2.3,
     'connectionValid': false,
-    'mspPassThrough': false,
     'cliActive': false,
     'cliValid': false
 };
diff --git a/js/serial_backend.js b/js/serial_backend.js
index f3f778ccf3..9de1553854 100644
--- a/js/serial_backend.js
+++ b/js/serial_backend.js
@@ -35,7 +35,6 @@ $(document).ready(function () {
                     MSP.disconnect_cleanup();
                     PortUsage.reset();
                     CONFIGURATOR.connectionValid = false;
-                    CONFIGURATOR.mspPassThrough = false;
 
                     // unlock port select & baud
                     $('div#port-picker #port').prop('disabled', false);
@@ -125,39 +124,34 @@ function onOpen(openInfo) {
 
         serial.onReceive.addListener(read_serial);
 
-        if (!CONFIGURATOR.mspPassThrough) {
-            // disconnect after 10 seconds with error if we don't get IDENT data
-            GUI.timeout_add('connecting', function () {
-                if (!CONFIGURATOR.connectionValid) {
-                    GUI.log(chrome.i18n.getMessage('noConfigurationReceived'));
+        // disconnect after 10 seconds with error if we don't get IDENT data
+        GUI.timeout_add('connecting', function () {
+            if (!CONFIGURATOR.connectionValid) {
+                GUI.log(chrome.i18n.getMessage('noConfigurationReceived'));
 
+                $('div#port-picker a.connect').click(); // disconnect
+            }
+        }, 10000);
+
+        // request configuration data
+        MSP.send_message(MSP_codes.MSP_UID, false, false, function () {
+            GUI.log(chrome.i18n.getMessage('uniqueDeviceIdReceived', [CONFIG.uid[0].toString(16) + CONFIG.uid[1].toString(16) + CONFIG.uid[2].toString(16)]));
+            MSP.send_message(MSP_codes.MSP_IDENT, false, false, function () {
+                GUI.timeout_remove('connecting'); // kill connecting timer
+
+                GUI.log(chrome.i18n.getMessage('firmwareVersion', [CONFIG.version]));
+
+                if (CONFIG.version >= CONFIGURATOR.firmwareVersionAccepted) {
+                    CONFIGURATOR.connectionValid = true;
+
+                    $('div#port-picker a.connect').text(chrome.i18n.getMessage('disconnect')).addClass('active');
+                    $('#tabs li a:first').click();
+                } else {
+                    GUI.log(chrome.i18n.getMessage('firmwareVersionNotSupported', [CONFIGURATOR.firmwareVersionAccepted]));
                     $('div#port-picker a.connect').click(); // disconnect
                 }
-            }, 10000);
-
-            // request configuration data
-            MSP.send_message(MSP_codes.MSP_UID, false, false, function () {
-                GUI.log(chrome.i18n.getMessage('uniqueDeviceIdReceived', [CONFIG.uid[0].toString(16) + CONFIG.uid[1].toString(16) + CONFIG.uid[2].toString(16)]));
-                MSP.send_message(MSP_codes.MSP_IDENT, false, false, function () {
-                    GUI.timeout_remove('connecting'); // kill connecting timer
-
-                    GUI.log(chrome.i18n.getMessage('firmwareVersion', [CONFIG.version]));
-
-                    if (CONFIG.version >= CONFIGURATOR.firmwareVersionAccepted) {
-                        CONFIGURATOR.connectionValid = true;
-
-                        $('div#port-picker a.connect').text(chrome.i18n.getMessage('disconnect')).addClass('active');
-                        $('#tabs li a:first').click();
-                    } else {
-                        GUI.log(chrome.i18n.getMessage('firmwareVersionNotSupported', [CONFIGURATOR.firmwareVersionAccepted]));
-                        $('div#port-picker a.connect').click(); // disconnect
-                    }
-                });
             });
-        } else {
-            $('div#port-picker a.connect').text(chrome.i18n.getMessage('disconnect')).addClass('active');
-            GUI.log('Connection opened in <strong>pass-through</strong> mode');
-        }
+        });
     } else {
         console.log('Failed to open serial port');
         GUI.log(chrome.i18n.getMessage('serialPortOpenFail'));
@@ -182,12 +176,10 @@ function onClosed(result) {
 }
 
 function read_serial(info) {
-    if (!CONFIGURATOR.cliActive && !CONFIGURATOR.mspPassThrough) {
+    if (!CONFIGURATOR.cliActive) {
         MSP.read(info);
     } else if (CONFIGURATOR.cliActive) {
         TABS.cli.read(info);
-    } else if (CONFIGURATOR.mspPassThrough) {
-        MSP.read(info);
     }
 }
 
diff --git a/main.js b/main.js
index 686669d9f1..85955b0282 100644
--- a/main.js
+++ b/main.js
@@ -56,7 +56,7 @@ $(document).ready(function () {
                 tab = $(self).parent().prop('class');
 
             // if there is no active connection, return
-            if (!CONFIGURATOR.connectionValid && tab != 'tab_logging') {
+            if (!CONFIGURATOR.connectionValid) {
                 GUI.log('You need to <strong>connect</strong> before you can view any of the tabs');
                 return;
             }
diff --git a/tabs/logging.js b/tabs/logging.js
index 5ffcb9ba4e..967da9f93e 100644
--- a/tabs/logging.js
+++ b/tabs/logging.js
@@ -6,7 +6,10 @@ TABS.logging.initialize = function (callback) {
     GUI.active_tab = 'logging';
     googleAnalytics.sendAppView('Logging');
 
-    var requested_properties = [];
+    var requested_properties = [],
+        samples = 0,
+        requests = 0,
+        log_buffer = [];
 
     if (CONFIGURATOR.connectionValid) {
         var get_motor_data = function () {
@@ -18,20 +21,6 @@ TABS.logging.initialize = function (callback) {
         }
 
         MSP.send_message(MSP_codes.MSP_RC, false, false, get_motor_data);
-    } else {
-        CONFIGURATOR.mspPassThrough = true;
-
-        // we will initialize RC.channels array and MOTOR_DATA array manually
-        RC.active_channels = 8;
-        for (var i = 0; i < RC.active_channels; i++) {
-            RC.channels[i] = 0;
-        }
-
-        for (var i = 0; i < 8; i++) {
-            MOTOR_DATA[i] = 0;
-        }
-
-        $('#content').load("./tabs/logging.html", process_html);
     }
 
     function process_html() {
@@ -68,10 +57,8 @@ TABS.logging.initialize = function (callback) {
                                 }
 
                                 // request new
-                                if (!CONFIGURATOR.mspPassThrough) {
-                                    for (var i = 0; i < requested_properties.length; i++, requests++) {
-                                        MSP.send_message(MSP_codes[requested_properties[i]]);
-                                    }
+                                for (var i = 0; i < requested_properties.length; i++, requests++) {
+                                    MSP.send_message(MSP_codes[requested_properties[i]]);
                                 }
                             }
 
@@ -111,22 +98,6 @@ TABS.logging.initialize = function (callback) {
             }
         });
 
-        if (CONFIGURATOR.mspPassThrough) {
-            $('a.back').show();
-
-            $('a.back').click(function() {
-                if (GUI.connected_to) {
-                    $('a.connect').click();
-                } else {
-                    GUI.tab_switch_cleanup(function () {
-                        CONFIGURATOR.mspPassThrough = false;
-                        $('#tabs > ul li').removeClass('active');
-                        TABS.default.initialize();
-                    });
-                }
-            });
-        }
-
         chrome.storage.local.get('logging_file_entry', function (result) {
             if (result.logging_file_entry) {
                 chrome.fileSystem.restoreEntry(result.logging_file_entry, function (entry) {
@@ -201,10 +172,6 @@ TABS.logging.initialize = function (callback) {
         append_to_file(head);
     }
 
-    var samples = 0,
-        requests = 0,
-        log_buffer = [];
-
     function crunch_data() {
         var sample = millitime();