diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6d873c03a..4c94b2272 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,8 @@
   - Allows for easier identification of version when reporting issues
 - Drop usage of `HW_BID` rerouting in boot.efi
   - Patch out PlatformSupport.plist instead, allows for less maintenance overall
+- Add support for AMD GOP injection (AMDGOP.efi)
+  - For MXM iMacs and Mac Pros with GPU VBIOS lacking GOP support (ie. no UEFI output even after OC loads)
 - Increment Binaries:
   - AirPortBrcmFixup 2.1.6 - release
   - AppleALC 1.7.6 - release
diff --git a/gui/gui_main.py b/gui/gui_main.py
index cdef089ad..ecb44129f 100644
--- a/gui/gui_main.py
+++ b/gui/gui_main.py
@@ -2480,13 +2480,24 @@ class wx_python_gui:
         self.timeout_spinner.Bind(wx.EVT_SPINCTRL, self.timeout_spinner_click)
         self.timeout_spinner.Centre(wx.HORIZONTAL)
 
+        # AMD GOP Injection
+        self.set_gop_injection = wx.CheckBox(self.frame_modal, label="AMD GOP Injection")
+        self.set_gop_injection.SetPosition(wx.Point(
+            30,
+            self.timeout_spinner.GetPosition().y + self.timeout_spinner.GetSize().height + 5))
+        self.set_gop_injection.SetValue(self.constants.gop_injection)
+        self.set_gop_injection.Bind(wx.EVT_CHECKBOX, self.gop_injection_checkbox_click)
+        models = ["iMac10,1", "iMac11,1", "iMac11,2", "iMac11,3", "iMac12,1", "iMac12,2", "MacPro3,1", "MacPro4,1", "MacPro5,1", "Xserve2,1", "Xserve3,1"]
+        if (not self.constants.custom_model and self.computer.real_model not in models) or (self.constants.custom_model and self.constants.custom_model not in models):
+            self.set_gop_injection.Disable()
+
         # Disable Thunderbolt
         self.disable_thunderbolt_checkbox = wx.CheckBox(self.frame_modal, label="Disable Thunderbolt")
         self.disable_thunderbolt_checkbox.SetValue(self.constants.disable_tb)
         self.disable_thunderbolt_checkbox.Bind(wx.EVT_CHECKBOX, self.disable_tb_click)
         self.disable_thunderbolt_checkbox.SetPosition(wx.Point(
-            30,
-            self.timeout_spinner.GetPosition().y + self.timeout_spinner.GetSize().height + 5))
+            self.set_gop_injection.GetPosition().x,
+            self.set_gop_injection.GetPosition().y + self.set_gop_injection.GetSize().height))
         self.disable_thunderbolt_checkbox.SetToolTip(wx.ToolTip("Disables Thunderbolt support on MacBookPro11,x\nMainly applicable for systems that cannot boot with Thunderbolt enabled"))
         if not self.constants.custom_model and not self.computer.real_model.startswith("MacBookPro11"):
             self.disable_thunderbolt_checkbox.Disable()
@@ -2745,6 +2756,14 @@ class wx_python_gui:
             print("Content Caching Disabled")
             self.constants.set_content_caching = False
 
+    def gop_injection_checkbox_click(self, event=None):
+        if self.set_gop_injection.GetValue():
+            print("GOP Injection Enabled")
+            self.constants.gop_injection = True
+        else:
+            print("GOP Injection Disabled")
+            self.constants.gop_injection = False
+
     def disable_tb_click(self, event=None):
         if self.disable_thunderbolt_checkbox.GetValue():
             print("Disable Thunderbolt Enabled")
diff --git a/payloads/Config/config.plist b/payloads/Config/config.plist
index bcd195a03..4119e1f94 100644
--- a/payloads/Config/config.plist
+++ b/payloads/Config/config.plist
@@ -2505,6 +2505,18 @@
 				<key>LoadEarly</key>
 				<false/>
 			</dict>
+			<dict>
+				<key>Comment</key>
+				<string></string>
+				<key>Path</key>
+				<string>AMDGOP.efi</string>
+				<key>Enabled</key>
+				<false/>
+				<key>Arguments</key>
+				<string></string>
+				<key>LoadEarly</key>
+				<false/>
+			</dict>
 		</array>
 		<key>Input</key>
 		<dict>
diff --git a/payloads/Drivers/AMDGOP.efi b/payloads/Drivers/AMDGOP.efi
new file mode 100644
index 000000000..b1bbcc282
Binary files /dev/null and b/payloads/Drivers/AMDGOP.efi differ
diff --git a/resources/build/graphics_audio.py b/resources/build/graphics_audio.py
index c50f4c960..250313cd7 100644
--- a/resources/build/graphics_audio.py
+++ b/resources/build/graphics_audio.py
@@ -277,6 +277,12 @@ class build_graphics_audio:
             self.config["UEFI"]["Quirks"]["ForgeUefiSupport"] = True
             self.config["UEFI"]["Quirks"]["ReloadOptionRoms"] = True
 
+        # AMD GOP VBIOS injection for AMD GCN 1-4 GPUs
+        if self.constants.gop_injection is True:
+            print("- Adding AMDGOP.efi")
+            shutil.copy(self.constants.amd_gop_driver_path, self.constants.drivers_path)
+            support.build_support(self.model, self.constants, self.config).get_efi_binary_by_path("AMDGOP.efi", "UEFI", "Drivers")["Enabled"] = True
+
     def spoof_handling(self):
         if self.constants.serial_settings == "None":
             return
diff --git a/resources/constants.py b/resources/constants.py
index 30f9ccf1e..a999e21bd 100644
--- a/resources/constants.py
+++ b/resources/constants.py
@@ -177,6 +177,7 @@ class Constants:
         self.allow_ts2_accel = True  #       Set TeraScale 2 Acceleration support
         self.force_nv_web = False  #         Force Nvidia Web Drivers on Tesla and Kepler
         self.force_output_support = False  # Force Output support for Mac Pros with PC VBIOS
+        self.gop_injection = False  #        Set GOP Injection support
 
         ## Miscellaneous
         self.disallow_cpufriend = False  #     Disable CPUFriend
@@ -248,6 +249,10 @@ class Constants:
     def exfat_legacy_driver_path(self):
         return self.payload_path / Path("Drivers/ExFatDxeLegacy.efi")
 
+    @property
+    def amd_gop_driver_path(self):
+        return self.payload_path / Path("Drivers/AMDGOP.efi")
+
     @property
     def xhci_driver_path(self):
         return self.payload_path / Path("Drivers/XhciDxe.efi")