--- a/testing/taskcluster/tasks/branches/mozilla-central/job_flags.yml
+++ b/testing/taskcluster/tasks/branches/mozilla-central/job_flags.yml
@@ -23,16 +23,24 @@ builds:
   emulator-kk:
     platfoms:
       - b2g
     types:
       opt:
         task: tasks/builds/b2g_emulator_kk_opt.yml
       debug:
         task: tasks/builds/b2g_emulator_kk_debug.yml
+  emulator-l:
+    platfoms:
+      - b2g
+    types:
+      opt:
+        task: tasks/builds/b2g_emulator_l_opt.yml
+      debug:
+        task: tasks/builds/b2g_emulator_l_debug.yml
   emulator-jb:
     platfoms:
       - b2g
     types:
       opt:
         task: tasks/builds/b2g_emulator_jb_opt.yml
       debug:
         task: tasks/builds/b2g_emulator_jb_debug.yml

--- a/testing/taskcluster/tasks/builds/b2g_emulator_l_debug.yml
+++ b/testing/taskcluster/tasks/builds/b2g_emulator_l_debug.yml
@@ -1,19 +1,24 @@
 $inherits:
   from: 'tasks/builds/b2g_emulator_base.yml'
 task:
   workerType: emulator-l-debug
   scopes:
     - 'docker-worker:cache:workspace-emulator-l-debug'
   metadata:
-    name: '[TC] B2G Emulator L Debug'
+    name: '[TC] B2G Emulator L (Debug)'
 
   extra:
+    treeherderEnv:
+      - production
+      - staging
     treeherder:
+      # Disable "TC" prefix...
+      groupSymbol: "?"
       collection:
         debug: true
       machine:
         platform: b2g-emu-l
 
   payload:
     cache:
       workspace-emulator-l-debug: /home/worker/workspace

--- a/testing/taskcluster/tasks/builds/b2g_emulator_l_opt.yml
+++ b/testing/taskcluster/tasks/builds/b2g_emulator_l_opt.yml
@@ -1,19 +1,24 @@
 $inherits:
   from: 'tasks/builds/b2g_emulator_base.yml'
 task:
   workerType: emulator-l
   scopes:
     - 'docker-worker:cache:workspace-emulator-l-opt'
   metadata:
-    name: '[TC] B2G L Emulator Opt'
+    name: '[TC] B2G L Emulator (Opt)'
 
   extra:
+    treeherderEnv:
+      - production
+      - staging
     treeherder:
+      # Disable "TC" prefix...
+      groupSymbol: "?"
       machine:
         platform: b2g-emu-l
 
   payload:
     cache:
       workspace-emulator-l-opt: /home/worker/workspace
     env:
       TARGET: 'emulator-l'