diff --git a/re/sniffer/snifferitem.cpp b/re/sniffer/snifferitem.cpp
index 2597fd0..2f5f1a9 100644
--- a/re/sniffer/snifferitem.cpp
+++ b/re/sniffer/snifferitem.cpp
@@ -16,8 +16,8 @@ SnifferItem::SnifferItem(const CANFrame& pFrame, quint32 seq):
     mLastMarker = mMarker;
     mCurrent.len = pFrame.len;
     /* that's dirty */
-    update(pFrame, seq);
-    update(pFrame, seq);
+    update(pFrame, seq, false);
+    update(pFrame, seq, false);
 }
 
 
@@ -85,8 +85,12 @@ int SnifferItem::elapsed() const
 }
 
 //called when a new frame comes in that matches our same ID
-void SnifferItem::update(const CANFrame& pFrame, quint32 timeSeq)
+//timeSeq is stored so we can figure out the last time a specific byte was updated
+//mute is used to specify whether to mask the byte against the notching filter
+//in order to hide any updates of the notched bits. This is toggleable
+void SnifferItem::update(const CANFrame& pFrame, quint32 timeSeq, bool mute)
 {
+    unsigned char maskedCurr, maskedData;
     //qDebug() << "update with ts: " << timeSeq;
     /* copy current to last */
     mLast = mCurrent;
@@ -95,7 +99,11 @@ void SnifferItem::update(const CANFrame& pFrame, quint32 timeSeq)
     /* copy new value */
     for (int i = 0; i < 8; i++)
     {
-        if (mCurrent.data[i] != pFrame.data[i])
+        maskedData = pFrame.data[i];
+        if (mute) maskedData &= ~mNotch[i];
+        maskedCurr = mCurrent.data[i];
+        if (mute) maskedCurr &= ~mNotch[i];
+        if (maskedCurr != maskedData)
         {
             mCurrent.data[i] = pFrame.data[i];
             mCurrent.dataTimestamp[i] = timeSeq;
diff --git a/re/sniffer/snifferitem.h b/re/sniffer/snifferitem.h
index 39067de..b5961c9 100644
--- a/re/sniffer/snifferitem.h
+++ b/re/sniffer/snifferitem.h
@@ -32,7 +32,7 @@ public:
     quint32 getDataTimestamp(uchar i) const;
     dc dataChange(uchar) const;
     int elapsed() const;
-    void update(const CANFrame& pFrame, quint32 timeSeq);
+    void update(const CANFrame& pFrame, quint32 timeSeq, bool mute);
     void updateMarker();
     void notch(bool);
 
diff --git a/re/sniffer/sniffermodel.cpp b/re/sniffer/sniffermodel.cpp
index dd1f977..c395782 100644
--- a/re/sniffer/sniffermodel.cpp
+++ b/re/sniffer/sniffermodel.cpp
@@ -284,14 +284,14 @@ void SnifferModel::update(CANConnection*, QVector<CANFrame>& pFrames)
             /* add the frame */
             beginInsertRows(QModelIndex(), index, index);
             mMap[frame.ID] = new SnifferItem(frame, mTimeSequence);
-            mMap[frame.ID]->update(frame, mTimeSequence);
+            mMap[frame.ID]->update(frame, mTimeSequence, mMuteNotched);
             endInsertRows();
 
             emit idChange(frame.ID, true);
         }
         else
             //updateData
-            mMap[frame.ID]->update(frame, mTimeSequence);
+            mMap[frame.ID]->update(frame, mTimeSequence, mMuteNotched);
     }
 }
 
diff --git a/re/sniffer/snifferwindow.cpp b/re/sniffer/snifferwindow.cpp
index df4b154..5e6c9aa 100644
--- a/re/sniffer/snifferwindow.cpp
+++ b/re/sniffer/snifferwindow.cpp
@@ -129,7 +129,10 @@ void SnifferWindow::idChange(int pId, bool pAdd)
         QString text = QString("0x") + QString("%1").arg(pId, 3, 16, QLatin1Char('0')).toUpper();
         item = new QListWidgetItem(text);
         item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsUserCheckable);
-        item->setCheckState(mFilter ? Qt::Unchecked : Qt::Checked);
+        //item->setCheckState(mFilter ? Qt::Unchecked : Qt::Checked);
+        //always check new IDs now. Otherwise any that expire then come back will not be selected
+        //and that might be a bigger issue than defaulting them unselected.
+        item->setCheckState(Qt::Checked);
         ui->listWidget->addItem(item);
         mMap[pId] = item;
     }