diff --git a/pyren/macro/init.txt b/pyren/macro/init.txt
new file mode 100644
index 0000000..b47e970
--- /dev/null
+++ b/pyren/macro/init.txt
@@ -0,0 +1,86 @@
+#
+#
+#       Initialisation macros for mod_term
+#
+#
+
+$addr = 7A
+$txa  = 7E0
+$rxa  = 7E8
+
+# reset elm
+reset_elm {
+  at ws
+  $prompt = ELM
+}
+
+# general CAN init
+init_can {
+  reset_elm      #macro
+  at e1
+  at s0
+  at h0
+  at l0
+  at al
+  at caf0
+  at cfc0
+  at sh $txa
+  at cra $rxa
+  at fc sh $txa
+  at fc sd 30 00 00
+  at fc sm 1
+  $prompt = CAN
+}
+
+# CAN 250 init
+can250 {
+  init_can
+  at st ff
+  at at 0
+  at sp 8
+  at at 1
+  $prompt = CAN250
+}
+
+# CAN 500 init
+can500 {
+  init_can
+  at st ff
+  at at 0
+  at sp 6
+  at at 1
+  $prompt = CAN500
+}
+
+# general ISO init
+init_iso {
+  reset_elm      #macro
+  at e1
+  at l1
+  at d1
+  at sh 81 $addr f1 
+  at sw 96
+  at wm 81 $addr f1 3E
+  #at wm 82 $addr f1 3E01
+  at ib10
+  at st ff
+  at at 0
+  $prompt = KL
+}
+
+# K-Line slow init
+slow {
+  init_iso
+  at sp 4
+  at at 1
+  $prompt = SLOW
+}
+
+# K-Line fast init
+fast {
+  init_iso
+  at sp 5
+  at at 1
+  $prompt = FAST
+}
+
diff --git a/pyren/mod_elm.py b/pyren/mod_elm.py
index d6f349f..9f4815c 100644
--- a/pyren/mod_elm.py
+++ b/pyren/mod_elm.py
@@ -465,7 +465,7 @@ class Port:
                 continue
             self.buff += byte
             tc = time.time ()
-            if 'ELM' or 'STN' in self.buff:
+            if ('ELM' in self.buff) or ('STN' in self.buff):
                 break
             if (tc - tb) > 1:
                 print "ERROR - rate not supported. Let's go back."
diff --git a/pyren/mod_scan_ecus.py b/pyren/mod_scan_ecus.py
index 429932c..91b43ec 100644
--- a/pyren/mod_scan_ecus.py
+++ b/pyren/mod_scan_ecus.py
@@ -645,7 +645,7 @@ class ScanEcus:
     ttrrsp = rrsp.replace(' ','')
     if not all(c in string.hexdigits for c in ttrrsp): return False 
     
-    while base+6<=len(row) and (int(row[base+3])*3+2)<=len(rrsp):
+    while base+6<=len(row):
       if row[base]!=req:
         req = row[base]
         rrsp = self.elm.cmd(req)[3:]
@@ -654,7 +654,10 @@ class ScanEcus:
         if not all(c in string.hexdigits for c in ttrrsp): return False
         
         if len( req )/2==3: rrsp = rrsp[3:]
-
+      
+      if  int(row[base+3])*3+2 > len(rrsp):
+        return False
+        
       byte = int(rrsp[int(row[base+3])*3:int(row[base+3])*3+2],16)
       mask = int(row[base+4],16)
       val  = int(row[base+5],16)
@@ -691,8 +694,8 @@ class ScanEcus:
     if row['stdType']=='UDS': 
       rerr = self.elm.cmd('1902AF')	    #get errors UDS
     
-    if len(row['stopDiagReq'])>0:
-      self.elm.cmd(row['stopDiagReq'])	#close session
+    #if len(row['stopDiagReq'])>0:
+    #  self.elm.cmd(row['stopDiagReq'])	#close session
 
     self.elm.cmd("at at 1")               #enable adaptive timing