diff --git a/tools/cabana/streams/replaystream.cc b/tools/cabana/streams/replaystream.cc
index b5ea44be0c..c7c79c8388 100644
--- a/tools/cabana/streams/replaystream.cc
+++ b/tools/cabana/streams/replaystream.cc
@@ -32,7 +32,7 @@ void ReplayStream::mergeSegments() {
 }
 
 bool ReplayStream::loadRoute(const QString &route, const QString &data_dir, uint32_t replay_flags) {
-  replay.reset(new Replay(route, {"can", "roadEncodeIdx", "wideRoadEncodeIdx", "carParams"}, {}, nullptr, replay_flags, data_dir, this));
+  replay.reset(new Replay(route, {"can", "roadEncodeIdx", "wideRoadEncodeIdx", "carParams"}, {}, {}, nullptr, replay_flags, data_dir, this));
   replay->setSegmentCacheLimit(settings.max_cached_minutes);
   replay->installEventFilter(event_filter, this);
   QObject::connect(replay.get(), &Replay::seekedTo, this, &AbstractStream::seekedTo);
diff --git a/tools/replay/main.cc b/tools/replay/main.cc
index 6b624aa1fa..78be2acd0b 100644
--- a/tools/replay/main.cc
+++ b/tools/replay/main.cc
@@ -8,6 +8,7 @@
 int main(int argc, char *argv[]) {
   QCoreApplication app(argc, argv);
 
+  const QStringList base_blacklist = {"uiDebug", "userFlag"};
   const std::tuple<QString, REPLAY_FLAGS, QString> flags[] = {
       {"dcam", REPLAY_FLAG_DCAM, "load driver camera"},
       {"ecam", REPLAY_FLAG_ECAM, "load wide road camera"},
@@ -16,6 +17,8 @@ int main(int argc, char *argv[]) {
       {"qcam", REPLAY_FLAG_QCAMERA, "load qcamera"},
       {"no-hw-decoder", REPLAY_FLAG_NO_HW_DECODER, "disable HW video decoding"},
       {"no-vipc", REPLAY_FLAG_NO_VIPC, "do not output video"},
+      {"all", REPLAY_FLAG_ALL_SERVICES, "do output all messages including " + base_blacklist.join(", ") + 
+                                        ". this may causes issues when used along with UI"}
   };
 
   QCommandLineParser parser;
@@ -56,7 +59,7 @@ int main(int argc, char *argv[]) {
     op_prefix.reset(new OpenpilotPrefix(prefix.toStdString()));
   }
 
-  Replay *replay = new Replay(route, allow, block, nullptr, replay_flags, parser.value("data_dir"), &app);
+  Replay *replay = new Replay(route, allow, block, base_blacklist, nullptr, replay_flags, parser.value("data_dir"), &app);
   if (!parser.value("c").isEmpty()) {
     replay->setSegmentCacheLimit(parser.value("c").toInt());
   }
diff --git a/tools/replay/replay.cc b/tools/replay/replay.cc
index 95315fe71b..ad6ad4a43d 100644
--- a/tools/replay/replay.cc
+++ b/tools/replay/replay.cc
@@ -10,14 +10,20 @@
 #include "system/hardware/hw.h"
 #include "tools/replay/util.h"
 
-Replay::Replay(QString route, QStringList allow, QStringList block, SubMaster *sm_, uint32_t flags, QString data_dir, QObject *parent)
+Replay::Replay(QString route, QStringList allow, QStringList block, QStringList base_blacklist, SubMaster *sm_, uint32_t flags, QString data_dir, QObject *parent)
     : sm(sm_), flags_(flags), QObject(parent) {
   std::vector<const char *> s;
   auto event_struct = capnp::Schema::from<cereal::Event>().asStruct();
   sockets_.resize(event_struct.getUnionFields().size());
   for (const auto &it : services) {
+    uint16_t which = event_struct.getFieldByName(it.name).getProto().getDiscriminantValue();
+    if ((which == cereal::Event::Which::UI_DEBUG || which == cereal::Event::Which::USER_FLAG) &&
+        !(flags & REPLAY_FLAG_ALL_SERVICES) && 
+        !allow.contains(it.name)) {
+      continue;
+    }
+
     if ((allow.empty() || allow.contains(it.name)) && !block.contains(it.name)) {
-      uint16_t which = event_struct.getFieldByName(it.name).getProto().getDiscriminantValue();
       sockets_[which] = it.name;
       if (!allow.empty() || !block.empty()) {
         allow_list.insert((cereal::Event::Which)which);
diff --git a/tools/replay/replay.h b/tools/replay/replay.h
index 2bb426361b..bf66b8d8b9 100644
--- a/tools/replay/replay.h
+++ b/tools/replay/replay.h
@@ -22,6 +22,7 @@ enum REPLAY_FLAGS {
   REPLAY_FLAG_NO_HW_DECODER = 0x0100,
   REPLAY_FLAG_FULL_SPEED = 0x0200,
   REPLAY_FLAG_NO_VIPC = 0x0400,
+  REPLAY_FLAG_ALL_SERVICES = 0x0800,
 };
 
 enum class FindFlag {
@@ -40,7 +41,7 @@ class Replay : public QObject {
   Q_OBJECT
 
 public:
-  Replay(QString route, QStringList allow, QStringList block, SubMaster *sm = nullptr,
+  Replay(QString route, QStringList allow, QStringList block, QStringList base_blacklist, SubMaster *sm = nullptr,
           uint32_t flags = REPLAY_FLAG_NONE, QString data_dir = "", QObject *parent = 0);
   ~Replay();
   bool load();
diff --git a/tools/replay/tests/test_replay.cc b/tools/replay/tests/test_replay.cc
index 30e3c811ee..f0b80269dc 100644
--- a/tools/replay/tests/test_replay.cc
+++ b/tools/replay/tests/test_replay.cc
@@ -154,7 +154,7 @@ TEST_CASE("Route") {
 // helper class for unit tests
 class TestReplay : public Replay {
  public:
-  TestReplay(const QString &route, uint8_t flags = REPLAY_FLAG_NO_FILE_CACHE) : Replay(route, {}, {}, nullptr, flags) {}
+  TestReplay(const QString &route, uint8_t flags = REPLAY_FLAG_NO_FILE_CACHE) : Replay(route, {}, {}, {}, nullptr, flags) {}
   void test_seek();
   void testSeekTo(int seek_to);
 };