diff --git a/selfdrive/debug/set_car_params.py b/selfdrive/debug/set_car_params.py
new file mode 100755
index 0000000000..1a5d75d7fb
--- /dev/null
+++ b/selfdrive/debug/set_car_params.py
@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+import sys
+
+from common.params import Params
+from tools.lib.route import Route
+from tools.lib.logreader import LogReader
+
+if __name__ == "__main__":
+  r = Route(sys.argv[1])
+  cp = [m for m in LogReader(r.qlog_paths()[0]) if m.which() == 'carParams']
+  Params().put("CarParams", cp[0].as_builder().to_bytes())