diff --git a/selfdrive/car/fw_versions.py b/selfdrive/car/fw_versions.py
index 072c2ae4e4..547904ee47 100755
--- a/selfdrive/car/fw_versions.py
+++ b/selfdrive/car/fw_versions.py
@@ -105,11 +105,14 @@ def match_fw_to_car_fuzzy(live_fw_versions, match_brand=None, log=True, exclude=
     return set()
 
 
-def match_fw_to_car_exact(live_fw_versions, match_brand=None, log=True) -> Set[str]:
+def match_fw_to_car_exact(live_fw_versions, match_brand=None, log=True, extra_fw_versions=None) -> Set[str]:
   """Do an exact FW match. Returns all cars that match the given
   FW versions for a list of "essential" ECUs. If an ECU is not considered
   essential the FW version can be missing to get a fingerprint, but if it's present it
   needs to match the database."""
+  if extra_fw_versions is None:
+    extra_fw_versions = {}
+
   invalid = set()
   candidates = {c: f for c, f in FW_VERSIONS.items() if
                 is_brand(MODEL_TO_BRAND[c], match_brand)}
@@ -117,6 +120,7 @@ def match_fw_to_car_exact(live_fw_versions, match_brand=None, log=True) -> Set[s
   for candidate, fws in candidates.items():
     config = FW_QUERY_CONFIGS[MODEL_TO_BRAND[candidate]]
     for ecu, expected_versions in fws.items():
+      expected_versions = expected_versions + extra_fw_versions.get(candidate, {}).get(ecu, [])
       ecu_type = ecu[0]
       addr = ecu[1:]