diff --git a/lib/controller/checks.py b/lib/controller/checks.py
index 2842a954e..c49617e85 100644
--- a/lib/controller/checks.py
+++ b/lib/controller/checks.py
@@ -24,7 +24,6 @@ from lib.core.common import readInput
 from lib.core.common import showStaticWords
 from lib.core.common import wasLastRequestError
 from lib.core.common import DynamicContentItem
-from lib.core.convert import urlencode
 from lib.core.data import conf
 from lib.core.data import kb
 from lib.core.data import logger
diff --git a/lib/core/agent.py b/lib/core/agent.py
index b70700aa2..69922b05d 100644
--- a/lib/core/agent.py
+++ b/lib/core/agent.py
@@ -11,6 +11,7 @@ import re
 
 from xml.etree import ElementTree as ET
 
+from lib.core.common import getCompiledRegex
 from lib.core.common import getInjectionCase
 from lib.core.common import randomInt
 from lib.core.common import randomStr
@@ -20,6 +21,7 @@ from lib.core.data import kb
 from lib.core.data import queries
 from lib.core.datatype import advancedDict
 from lib.core.exception import sqlmapNoneDataException
+from lib.core.settings import PAYLOAD_DELIMITER
 
 class Agent:
     """
@@ -54,18 +56,17 @@ class Agent:
         falseValue = ""
         negValue   = ""
         retValue   = ""
-        newValue   = urlencode(newValue) if place != "URI" else newValue
 
         if negative or kb.unionNegative:
             negValue = "-"
         elif falseCond or kb.unionFalseCond:
             randInt = randomInt()
-            falseValue = urlencode(" AND %d=%d" % (randInt, randInt + 1))
+            falseValue = " AND %d=%d" % (randInt, randInt + 1)
 
         # After identifing the injectable parameter
         if kb.injPlace == "User-Agent":
             retValue = kb.injParameter.replace(kb.injParameter,
-                                               "%s%s" % (negValue, kb.injParameter + falseValue + newValue))
+                                               self.addPayloadDelimiters("%s%s" % (negValue, kb.injParameter + falseValue + newValue)))
         elif kb.injParameter:
             paramString = conf.parameters[kb.injPlace]
             paramDict = conf.paramDict[kb.injPlace]
@@ -76,21 +77,21 @@ class Agent:
                 iterator = root.getiterator(kb.injParameter)
 
                 for child in iterator:
-                    child.text = "%s%s" % (negValue, value + falseValue + newValue)
+                    child.text = self.addPayloadDelimiters(negValue + value + falseValue + newValue)
 
                 retValue = ET.tostring(root)
             elif kb.injPlace == "URI":
                 retValue = paramString.replace("*",
-                                               "%s%s" % (negValue, falseValue + newValue))
+                                               self.addPayloadDelimiters("%s%s" % (negValue, falseValue + newValue)))
             else:
                 retValue = paramString.replace("%s=%s" % (kb.injParameter, value),
-                                               "%s=%s%s" % (kb.injParameter, negValue, value + falseValue + newValue))
+                                               "%s=%s" % (kb.injParameter, self.addPayloadDelimiters(negValue + value + falseValue + newValue)))
 
         # Before identifing the injectable parameter
         elif parameter == "User-Agent":
-            retValue = value.replace(value, newValue)
+            retValue = value.replace(value, self.addPayloadDelimiters(newValue))
         elif place == "URI":
-            retValue = value.replace("*", "%s" % newValue.replace(value, str()))
+            retValue = value.replace("*", self.addPayloadDelimiters("%s" % newValue.replace(value, str())))
         else:
             paramString = conf.parameters[place]
 
@@ -99,12 +100,12 @@ class Agent:
                 iterator = root.getiterator(parameter)
 
                 for child in iterator:
-                    child.text = newValue
+                    child.text = self.addPayloadDelimiters(newValue)
 
                 retValue = ET.tostring(root)
             else:
                 retValue = paramString.replace("%s=%s" % (parameter, value),
-                                               "%s=%s" % (parameter, newValue))
+                                               "%s=%s" % (parameter, self.addPayloadDelimiters(newValue)))
 
         return retValue
 
@@ -604,5 +605,60 @@ class Agent:
 
         return queries[kb.dbms].case.query % expression
 
+    def addPayloadDelimiters(self, inpStr):
+        """
+        Adds payload delimiters around the input string
+        """
+        retVal = inpStr
+
+        if inpStr:
+            retVal = "%s%s%s" % (PAYLOAD_DELIMITER, inpStr, PAYLOAD_DELIMITER)
+
+        return retVal
+
+    def removePayloadDelimiters(self, inpStr, urlencode_=True):
+        """
+        Removes payload delimiters from inside the input string
+        """
+        retVal = inpStr
+
+        if inpStr:
+            if urlencode_:
+                regObj = getCompiledRegex("(?P<result>%s.*?%s)" % (PAYLOAD_DELIMITER, PAYLOAD_DELIMITER))
+
+                for match in regObj.finditer(inpStr):
+                    retVal = retVal.replace(match.group("result"), urlencode(match.group("result")[1:-1]))
+            else:
+                retVal = retVal.replace(PAYLOAD_DELIMITER, '')
+
+        return retVal
+
+    def extractPayload(self, inpStr):
+        """
+        Extracts payload from inside of the input string
+        """
+        retVal = None
+
+        if inpStr:
+            regObj = getCompiledRegex("(?P<result>%s.*?%s)" % (PAYLOAD_DELIMITER, PAYLOAD_DELIMITER))
+            match = regObj.search(inpStr)
+
+            if match:
+                retVal = match.group("result")[1:-1]
+
+        return retVal
+
+    def replacePayload(self, inpStr, payload):
+        """
+        Replaces payload inside the input string with a given payload
+        """
+        retVal = inpStr
+
+        if inpStr:
+            regObj = getCompiledRegex("(?P<result>%s.*?%s)" % (PAYLOAD_DELIMITER, PAYLOAD_DELIMITER))
+            retVal = regObj.sub("%s%s%s" % (PAYLOAD_DELIMITER, payload, PAYLOAD_DELIMITER), inpStr)
+
+        return retVal
+
 # SQL agent
 agent = Agent()
diff --git a/lib/core/common.py b/lib/core/common.py
index c20c16034..77abd6e81 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -1532,7 +1532,7 @@ def runningAsAdmin():
             isAdmin = True
     else:
         errMsg  = "sqlmap is not able to check if you are running it "
-        errMsg += "as an administrator accout on this platform. "
+        errMsg += "as an administrator account on this platform. "
         errMsg += "sqlmap will assume that you are an administrator "
         errMsg += "which is mandatory for the requested takeover attack "
         errMsg += "to work properly"
diff --git a/lib/core/option.py b/lib/core/option.py
index df2f6f7e6..a153bba3c 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -556,14 +556,14 @@ def __setTamperingFunctions():
                 raise sqlmapSyntaxException, "can not import tamper script '%s' (%s)" % (filename[:-3], msg)
 
             for name, function in inspect.getmembers(module, inspect.isfunction):
-                if name == "tamper" and function.func_code.co_argcount == 2:
+                if name == "tamper" and function.func_code.co_argcount == 1:
                     kb.tamperFunctions.append(function)
                     found = True
 
                     break
 
             if not found:
-                raise sqlmapGenericException, "missing function 'tamper(place, value)' in tamper script '%s'" % tfile
+                raise sqlmapGenericException, "missing function 'tamper(value)' in tamper script '%s'" % tfile
 
 def __setThreads():
     if not isinstance(conf.threads, int) or conf.threads <= 0:
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 3dab99699..b40b603a3 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -46,6 +46,8 @@ ERROR_EMPTY_CHAR   = ":x:"
 ERROR_START_CHAR   = ":s:"
 ERROR_END_CHAR     = ":e:"
 
+PAYLOAD_DELIMITER  = "\x00"
+
 # System variables
 IS_WIN             = subprocess.mswindows
 # The name of the operating system dependent module imported. The following
diff --git a/lib/parse/banner.py b/lib/parse/banner.py
index 851ddd351..42efc0bde 100644
--- a/lib/parse/banner.py
+++ b/lib/parse/banner.py
@@ -92,7 +92,7 @@ def bannerParser(banner):
     """
 
     xmlfile = None
-    
+
     if kb.dbms == "Microsoft SQL Server":
         xmlfile = paths.MSSQL_XML
     elif kb.dbms == "MySQL":
@@ -104,7 +104,7 @@ def bannerParser(banner):
 
     if not xmlfile:
         return
-        
+
     checkFile(xmlfile)
 
     if kb.dbms == "Microsoft SQL Server":
diff --git a/lib/request/basic.py b/lib/request/basic.py
index 0d28d01ca..fe6e444d0 100644
--- a/lib/request/basic.py
+++ b/lib/request/basic.py
@@ -35,9 +35,6 @@ def forgeHeaders(cookie, ua):
 
     for header, value in conf.httpHeaders:
         if cookie and header == "Cookie":
-            if conf.cookieUrlencode:
-                cookie = urlEncodeCookieValues(cookie)
-
             headers[header] = cookie
         elif ua and header == "User-Agent":
             headers[header] = ua
diff --git a/lib/request/connect.py b/lib/request/connect.py
index 9c0a17bb5..b8e701904 100644
--- a/lib/request/connect.py
+++ b/lib/request/connect.py
@@ -16,6 +16,7 @@ import urlparse
 import traceback
 
 from lib.contrib import multipartpost
+from lib.core.agent import agent
 from lib.core.common import readInput
 from lib.core.common import getUnicode
 from lib.core.convert import urlencode
@@ -107,7 +108,6 @@ class Connect:
                     get = conf.parameters["GET"]
 
                 if get:
-                    get = urlencode(get)
                     url = "%s?%s" % (url, get)
                     requestMsg += "?%s" % get
 
@@ -149,7 +149,7 @@ class Connect:
                     cookieStr += "%s; " % cookie[8:index]
 
             conn = urllib2.urlopen(req)
-            
+
             if not req.has_header("Accept-Encoding"):
                 requestHeaders += "Accept-Encoding: identity\n"
 
@@ -307,8 +307,22 @@ class Connect:
             place = kb.injPlace
 
         if kb.tamperFunctions:
-            for function in kb.tamperFunctions:
-                value = function(place, value)
+            payload = agent.extractPayload(value)
+            if payload:
+                for function in kb.tamperFunctions:
+                    payload = function(payload)
+                value = agent.replacePayload(value, payload)
+
+        if place == "GET":
+            value = agent.removePayloadDelimiters(value, True)
+        elif place == "POST":
+            value = agent.removePayloadDelimiters(value, False)
+        elif place == "Cookie":
+            value = agent.removePayloadDelimiters(value, conf.cookieUrlencode)
+        elif place == "User-Agent":
+            value = agent.removePayloadDelimiters(value, True)
+        elif place == "URI":
+            value = agent.removePayloadDelimiters(value, False)
 
         if conf.checkPayload:
             checkPayload(value)
diff --git a/lib/request/inject.py b/lib/request/inject.py
index 40470decb..db872c071 100644
--- a/lib/request/inject.py
+++ b/lib/request/inject.py
@@ -22,7 +22,6 @@ from lib.core.common import pushValue
 from lib.core.common import randomInt
 from lib.core.common import readInput
 from lib.core.common import safeStringFormat
-from lib.core.convert import urlencode
 from lib.core.data import conf
 from lib.core.data import kb
 from lib.core.data import logger
diff --git a/lib/techniques/blind/inference.py b/lib/techniques/blind/inference.py
index f340eac5f..7074e8fa6 100644
--- a/lib/techniques/blind/inference.py
+++ b/lib/techniques/blind/inference.py
@@ -22,7 +22,6 @@ from lib.core.common import pushValue
 from lib.core.common import readInput
 from lib.core.common import replaceNewlineTabs
 from lib.core.common import safeStringFormat
-from lib.core.convert import urlencode
 from lib.core.data import conf
 from lib.core.data import kb
 from lib.core.data import logger
@@ -122,7 +121,7 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
 
             forgedPayload = safeStringFormat(payload.replace('%3E', '%3D'), (expressionUnescaped, idx, posValue))
             queriesCount[0] += 1
-            result = Request.queryPage(urlencode(forgedPayload))
+            result = Request.queryPage(forgedPayload)
 
             if result:
                 return hintValue[idx-1]
@@ -153,7 +152,7 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
         if len(charTbl) == 1:
             forgedPayload = safeStringFormat(payload.replace('%3E', '%3D'), (expressionUnescaped, idx, charTbl[0]))
             queriesCount[0] += 1
-            result = Request.queryPage(urlencode(forgedPayload))
+            result = Request.queryPage(forgedPayload)
 
             if result:
                 return chr(charTbl[0]) if charTbl[0] < 128 else unichr(charTbl[0])
@@ -174,7 +173,7 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
             forgedPayload = safeStringFormat(payload, (expressionUnescaped, idx, posValue))
 
             queriesCount[0] += 1
-            result = Request.queryPage(urlencode(forgedPayload))
+            result = Request.queryPage(forgedPayload)
 
             if kb.dbms in ("SQLite", "Microsoft Access", "SAP MaxDB"):
                 posValue = popValue()
@@ -226,7 +225,7 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
                     for retVal in (originalTbl[originalTbl.index(minValue)], originalTbl[originalTbl.index(minValue) + 1]):
                         forgedPayload = safeStringFormat(payload.replace('%3E', '%3D'), (expressionUnescaped, idx, retVal))
                         queriesCount[0] += 1
-                        result = Request.queryPage(urlencode(forgedPayload))
+                        result = Request.queryPage(forgedPayload)
 
                         if result:
                             return chr(retVal) if retVal < 128 else unichr(retVal)
@@ -444,7 +443,7 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
                     query = agent.prefixQuery(safeStringFormat("AND (%s) = %s", (expressionUnescaped, testValue)))
                     query = agent.postfixQuery(query)
                     queriesCount[0] += 1
-                    result = Request.queryPage(urlencode(agent.payload(newValue=query)))
+                    result = Request.queryPage(agent.payload(newValue=query))
 
                     # Did we have luck?
                     if result:
@@ -468,7 +467,7 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
                     query = agent.prefixQuery(safeStringFormat("AND (%s) = %s", (subquery, testValue)))
                     query = agent.postfixQuery(query)
                     queriesCount[0] += 1
-                    result = Request.queryPage(urlencode(agent.payload(newValue=query)))
+                    result = Request.queryPage(agent.payload(newValue=query))
 
                     # Did we have luck?
                     if result:
diff --git a/lib/techniques/error/use.py b/lib/techniques/error/use.py
index 108a647e9..ee2941d38 100644
--- a/lib/techniques/error/use.py
+++ b/lib/techniques/error/use.py
@@ -15,7 +15,6 @@ from lib.core.common import getUnicode
 from lib.core.common import randomInt
 from lib.core.common import replaceNewlineTabs
 from lib.core.common import safeStringFormat
-from lib.core.convert import urlencode
 from lib.core.data import conf
 from lib.core.data import kb
 from lib.core.data import logger
@@ -68,7 +67,7 @@ def errorUse(expression):
     logger.debug(debugMsg)
 
     payload = agent.payload(newValue=forgedQuery)
-    result = Request.queryPage(urlencode(payload), content=True)
+    result = Request.queryPage(payload, content=True)
     match = re.search('%s(?P<result>.*?)%s' % (ERROR_START_CHAR, ERROR_END_CHAR), result[0], re.DOTALL | re.IGNORECASE)
 
     if match:
diff --git a/tamper/between.py b/tamper/between.py
index 7a58d5fd2..7d70f8fda 100644
--- a/tamper/between.py
+++ b/tamper/between.py
@@ -7,10 +7,7 @@ Copyright (c) 2006-2010 sqlmap developers (http://sqlmap.sourceforge.net/)
 See the file 'doc/COPYING' for copying permission
 """
 
-from lib.core.convert import urldecode
-from lib.core.convert import urlencode
-
-def tamper(place, value):
+def tamper(value):
     """
     Replaces '>' with 'NOT BETWEEN 0 AND #'
     Example: 'A > B' becomes 'A NOT BETWEEN 0 AND B'
@@ -19,14 +16,12 @@ def tamper(place, value):
     retVal = value
 
     if value:
-        if place != "URI":
-            value = urldecode(value)
-
         retVal = ""
         quote, doublequote, firstspace = False, False, False
 
         for i in xrange(len(value)):
             if not firstspace:
+
                 if value[i].isspace():
                     firstspace = True
                     retVal += " "
@@ -47,8 +42,5 @@ def tamper(place, value):
 
             retVal += value[i]
 
-        if place != "URI":
-            retVal = urlencode(retVal)
-
     return retVal
 
diff --git a/tamper/charencode.py b/tamper/charencode.py
index 9070e76fc..4eb5adacc 100644
--- a/tamper/charencode.py
+++ b/tamper/charencode.py
@@ -11,7 +11,7 @@ import string
 
 from lib.core.exception import sqlmapUnsupportedFeatureException
 
-def tamper(place, value):
+def tamper(value):
     """
     Replaces value with urlencode of non-encoded chars in value
     Example: 'SELECT%20FIELD%20FROM%20TABLE' becomes '%53%45%4c%45%43%54%20%46%49%45%4c%44%20%46%52%4f%4d%20%54%41%42%4c%45'
@@ -20,18 +20,15 @@ def tamper(place, value):
     retVal = value
 
     if value:
-        if place != "URI":
-            retVal = ""
-            i = 0
+        retVal = ""
+        i = 0
 
-            while i < len(value):
-                if value[i] == '%' and (i < len(value) - 2) and value[i+1] in string.hexdigits and value[i+2] in string.hexdigits:
-                    retVal += value[i:i+3]
-                    i += 3
-                else:
-                    retVal += '%%%X' % ord(value[i])
-                    i += 1
-        else:
-            raise sqlmapUnsupportedFeatureException, "can't use tamper script '%s' with 'URI' type injections" % __name__
+        while i < len(value):
+            if value[i] == '%' and (i < len(value) - 2) and value[i+1] in string.hexdigits and value[i+2] in string.hexdigits:
+                retVal += value[i:i+3]
+                i += 3
+            else:
+                retVal += '%%%X' % ord(value[i])
+                i += 1
 
     return retVal
diff --git a/tamper/charunicodeencode.py b/tamper/charunicodeencode.py
index d6c76dbbf..baa8dd0b7 100644
--- a/tamper/charunicodeencode.py
+++ b/tamper/charunicodeencode.py
@@ -11,7 +11,7 @@ import string
 
 from lib.core.exception import sqlmapUnsupportedFeatureException
 
-def tamper(place, value):
+def tamper(value):
     """
     Replaces value with unicode-urlencode of non-encoded chars in value
     Example: 'SELECT%20FIELD%20FROM%20TABLE' becomes '%u0053%u0045%u004c%u0045%u0043%u0054%u0020%u0046%u0049%u0045%u004c%u0044%u0020%u0046%u0052%u004f%u004d%u0020%u0054%u0041%u0042%u004c%u0045'
@@ -20,18 +20,15 @@ def tamper(place, value):
     retVal = value
 
     if value:
-        if place != "URI":
-            retVal = ""
-            i = 0
+        retVal = ""
+        i = 0
 
-            while i < len(value):
-                if value[i] == '%' and (i < len(value) - 2) and value[i+1] in string.hexdigits and value[i+2] in string.hexdigits:
-                    retVal += "%%u00%s" % value[i+1:i+3]
-                    i += 3
-                else:
-                    retVal += '%%u00%X' % ord(value[i])
-                    i += 1
-        else:
-            raise sqlmapUnsupportedFeatureException, "can't use tamper script '%s' with 'URI' type injections" % __name__
+        while i < len(value):
+            if value[i] == '%' and (i < len(value) - 2) and value[i+1] in string.hexdigits and value[i+2] in string.hexdigits:
+                retVal += "%%u00%s" % value[i+1:i+3]
+                i += 3
+            else:
+                retVal += '%%u00%X' % ord(value[i])
+                i += 1
 
     return retVal
diff --git a/tamper/doubleencode.py b/tamper/doubleencode.py
index bfac5da67..626a067fb 100644
--- a/tamper/doubleencode.py
+++ b/tamper/doubleencode.py
@@ -10,16 +10,13 @@ See the file 'doc/COPYING' for copying permission
 from lib.core.convert import urlencode
 from lib.core.exception import sqlmapUnsupportedFeatureException
 
-def tamper(place, value):
+def tamper(value):
     """
     Replaces value with urlencode(value)
     Example: 'SELECT%20FIELD%20FROM%20TABLE' becomes 'SELECT%25%20FIELD%25%20FROM%25%20TABLE'
     """
 
     if value:
-        if place != "URI":
-            value = urlencode(value, convall=True)
-        else:
-            raise sqlmapUnsupportedFeatureException, "can't use tamper script '%s' with 'URI' type injections" % __name__
+        value = urlencode(value, convall=True)
 
     return value
diff --git a/tamper/ifnull2ifisnull.py b/tamper/ifnull2ifisnull.py
index aa6564d12..a55b5ce6f 100644
--- a/tamper/ifnull2ifisnull.py
+++ b/tamper/ifnull2ifisnull.py
@@ -7,18 +7,13 @@ Copyright (c) 2006-2010 sqlmap developers (http://sqlmap.sourceforge.net/)
 See the file 'doc/COPYING' for copying permission
 """
 
-from lib.core.convert import urldecode
-from lib.core.convert import urlencode
-
-def tamper(place, value):
+def tamper(value):
     """
     Replaces 'IFNULL(A, B)' with 'IF(ISNULL(A), B, A)'
     Example: 'IFNULL(1, 2)' becomes 'IF(ISNULL(1), 2, 1)'
     """
 
     if value and value.find("IFNULL") > -1:
-        if place != "URI":
-            value = urldecode(value)
 
         while value.find("IFNULL(") > -1:
             index = value.find("IFNULL(")
@@ -28,11 +23,14 @@ def tamper(place, value):
             for i in xrange(index + len("IFNULL("), len(value)):
                 if deepness == 1 and value[i] == ',':
                     comma = i
+
                 elif deepness == 1 and value[i] == ')':
                     end = i
                     break
+
                 elif value[i] == '(':
                     deepness += 1
+
                 elif value[i] == ')':
                     deepness -= 1
 
@@ -44,7 +42,4 @@ def tamper(place, value):
             else:
                 break
 
-        if place != "URI":
-            value = urlencode(value)
-
     return value
diff --git a/tamper/randomcase.py b/tamper/randomcase.py
index d0e536dc2..ac700858c 100644
--- a/tamper/randomcase.py
+++ b/tamper/randomcase.py
@@ -10,8 +10,6 @@ See the file 'doc/COPYING' for copying permission
 import re
 
 from lib.core.common import randomRange
-from lib.core.convert import urldecode
-from lib.core.convert import urlencode
 from lib.core.data import kb
 
 def tamper(place, value):
@@ -23,9 +21,6 @@ def tamper(place, value):
     retVal = value
 
     if value:
-        if place != "URI":
-            retVal = urldecode(retVal)
-
         for match in re.finditer(r"[A-Za-z_]+", retVal):
             word = match.group()
 
@@ -37,7 +32,4 @@ def tamper(place, value):
 
                 retVal = retVal.replace(word, newWord)
 
-        if place != "URI":
-            retVal = urlencode(retVal)
-
     return retVal
diff --git a/tamper/randomcomments.py b/tamper/randomcomments.py
index 59e5c59f3..3d40874e2 100644
--- a/tamper/randomcomments.py
+++ b/tamper/randomcomments.py
@@ -10,11 +10,9 @@ See the file 'doc/COPYING' for copying permission
 import re
 
 from lib.core.common import randomRange
-from lib.core.convert import urldecode
-from lib.core.convert import urlencode
 from lib.core.data import kb
 
-def tamper(place, value):
+def tamper(value):
     """
     Add random comments to value
     Example: 'INSERT' becomes 'IN/**/S/**/ERT'
@@ -23,9 +21,6 @@ def tamper(place, value):
     retVal = value
 
     if value:
-        if place != "URI":
-            retVal = urldecode(retVal)
-
         for match in re.finditer(r"[A-Za-z_]+", retVal):
             word = match.group()
 
@@ -41,7 +36,4 @@ def tamper(place, value):
                 newWord += word[-1]
                 retVal = retVal.replace(word, newWord)
 
-        if place != "URI":
-            retVal = urlencode(retVal)
-
     return retVal
diff --git a/tamper/space2comment.py b/tamper/space2comment.py
index 960844192..ba247de67 100644
--- a/tamper/space2comment.py
+++ b/tamper/space2comment.py
@@ -7,10 +7,7 @@ Copyright (c) 2006-2010 sqlmap developers (http://sqlmap.sourceforge.net/)
 See the file 'doc/COPYING' for copying permission
 """
 
-from lib.core.convert import urldecode
-from lib.core.convert import urlencode
-
-def tamper(place, value):
+def tamper(value):
     """
     Replaces ' ' with '/**/'
     Example: 'SELECT id FROM users' becomes 'SELECT/**/id/**/FROM users'
@@ -19,9 +16,6 @@ def tamper(place, value):
     retVal = value
 
     if value:
-        if place != "URI":
-            value = urldecode(value)
-
         retVal = ""
         quote, doublequote, firstspace = False, False, False
 
@@ -44,8 +38,5 @@ def tamper(place, value):
 
             retVal += value[i]
 
-        if place != "URI":
-            retVal = urlencode(retVal)
-
     return retVal
 
diff --git a/tamper/space2plus.py b/tamper/space2plus.py
index bf0af4989..86a396b90 100644
--- a/tamper/space2plus.py
+++ b/tamper/space2plus.py
@@ -7,10 +7,7 @@ Copyright (c) 2006-2010 sqlmap developers (http://sqlmap.sourceforge.net/)
 See the file 'doc/COPYING' for copying permission
 """
 
-from lib.core.convert import urldecode
-from lib.core.convert import urlencode
-
-def tamper(place, value):
+def tamper(value):
     """
     Replaces ' ' with '/**/'
     Example: 'SELECT id FROM users' becomes 'SELECT+id+FROM+users'
@@ -19,9 +16,6 @@ def tamper(place, value):
     retVal = value
 
     if value:
-        if place != "URI":
-            value = urldecode(value)
-
         retVal = ""
         quote, doublequote, firstspace = False, False, False
 
@@ -44,8 +38,5 @@ def tamper(place, value):
 
             retVal += value[i]
 
-        if place != "URI":
-            retVal = urlencode(retVal)
-
     return retVal
 
diff --git a/tamper/space2randomblank.py b/tamper/space2randomblank.py
index fe9c2161d..079d3cbbb 100644
--- a/tamper/space2randomblank.py
+++ b/tamper/space2randomblank.py
@@ -9,10 +9,7 @@ See the file 'doc/COPYING' for copying permission
 
 import random
 
-from lib.core.convert import urldecode
-from lib.core.convert import urlencode
-
-def tamper(place, value):
+def tamper(value):
     """
     Replaces ' ' with a random blank char from a set ('\r', '\n', '\t')
     Example: 'SELECT id FROM users' becomes 'SELECT\rid\tFROM\nusers'
@@ -22,9 +19,6 @@ def tamper(place, value):
     retVal = value
 
     if value:
-        if place != "URI":
-            value = urldecode(value)
-
         retVal = ""
         quote, doublequote, firstspace = False, False, False
 
@@ -47,8 +41,5 @@ def tamper(place, value):
 
             retVal += value[i]
 
-        if place != "URI":
-            retVal = urlencode(retVal)
-
     return retVal