diff --git a/.gitmodules b/.gitmodules
index 40754f5dc7..248231466d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -33,3 +33,7 @@
 	path = firmware/controllers/lua/luaaa
 	url = https://github.com/rusefi/luaaa
 	branch = rusefi_prod_2019
+[submodule "firmware/ext/openblt"]
+	path = firmware/ext/openblt
+	url = https://github.com/rusefi/openblt
+	branch = rusefi_prod
diff --git a/firmware/ext/openblt b/firmware/ext/openblt
new file mode 160000
index 0000000000..d37f1887f7
--- /dev/null
+++ b/firmware/ext/openblt
@@ -0,0 +1 @@
+Subproject commit d37f1887f7a03af9b563bbcaa51fe65e8e7d5fa8