diff --git a/rowers/dataprep.py b/rowers/dataprep.py
index 1b54a396..80fc37f1 100644
--- a/rowers/dataprep.py
+++ b/rowers/dataprep.py
@@ -1575,7 +1575,8 @@ def testdata(time, distance, pace, spm):
 # is not in DB, read from CSV file (and create DB entry)
 
 
-def getrowdata_db(id=0, doclean=False, convertnewtons=True):
+def getrowdata_db(id=0, doclean=False, convertnewtons=True,
+                  checkefficiency=True):
     data = read_df_sql(id)
     data['x_right'] = data['x_right'] / 1.0e6
     data['deltat'] = data['time'].diff()
@@ -1591,7 +1592,7 @@ def getrowdata_db(id=0, doclean=False, convertnewtons=True):
         row = Workout.objects.get(id=id)
 
     
-    if not data.empty and data['efficiency'].mean() == 0 and data['power'].mean() != 0:
+    if not data.empty and data['efficiency'].mean() == 0 and data['power'].mean() != 0 and checkefficiency == True:
         data = add_efficiency(id=id)
 
     if doclean:
@@ -1946,7 +1947,10 @@ def fix_newtons(id=0, limit=3000):
 
 
 def add_efficiency(id=0):
-    rowdata, row = getrowdata_db(id=id, doclean=False, convertnewtons=False)
+    rowdata, row = getrowdata_db(id=id,
+                                 doclean=False,
+                                 convertnewtons=False,
+                                 checkefficiency=False)
     power = rowdata['power']
     pace = rowdata['pace'] / 1.0e3
     velo = 500. / pace
diff --git a/rowers/dataprepnodjango.py b/rowers/dataprepnodjango.py
index 9ef61a54..229f6289 100644
--- a/rowers/dataprepnodjango.py
+++ b/rowers/dataprepnodjango.py
@@ -631,11 +631,11 @@ def delete_strokedata(id,debug=False):
     conn.close()
     engine.dispose()
 
-def update_strokedata(id,df,debug=False,bands=True,barchart=True,otwpower=True):
+def update_strokedata(id,df,debug=False):
     delete_strokedata(id,debug=debug)
     if debug:
         print "updating ",id
-    rowdata = dataprep(df,id=id,bands=False,barchart=True,otwpower=True,
+    rowdata = dataprep(df,id=id,bands=True,barchart=True,otwpower=True,
                        debug=debug)
 
     return rowdata
@@ -1031,8 +1031,6 @@ def dataprep(rowdatadf,id=0,bands=True,barchart=True,otwpower=True,
     velo = 500./p
 
     distanceperstroke = 60.*velo/spm
-    if debug:
-        print distanceperstroke.mean()
 
 
 
@@ -1212,8 +1210,6 @@ def dataprep(rowdatadf,id=0,bands=True,barchart=True,otwpower=True,
 	ergpace[ergpace == np.inf] = 240.
 	ergpace2 = ergpace.apply(lambda x: timedeltaconv(x))
 
-        efficiency = efficiency.replace([-np.inf,np.inf],np.nan)
-        efficiency.fillna(method='ffill')
 
 
 	data['ergpace'] = ergpace*1e3