diff --git a/B6-TCU/B6-2024-july.txt b/B6-TCU/B6-2024-july.txt
index 10280dc8..43c5f446 100644
--- a/B6-TCU/B6-2024-july.txt
+++ b/B6-TCU/B6-2024-july.txt
@@ -4,4 +4,22 @@
 -- endinclude
 
 -- include utils.lua
--- endinclude
\ No newline at end of file
+-- endinclude
+
+setTickRate(100)
+
+canRxAdd(ECU_BUS, Diagnose_1, silentlyRelayFromECU)
+
+
+canRxAddMask(ECU_BUS, 0, 0, silentlyRelayFromECU)
+canRxAddMask(TCU_BUS, 0, 0, silentlyRelayFromTCU)
+
+everySecondTimer = Timer.new()
+
+function onTick()
+	if everySecondTimer : getElapsedSeconds() > 1 then
+		everySecondTimer : reset()
+		print("Total from ECU " ..totalEcuMessages .. " totalTcuMessages " .. totalTcuMessages)
+	end
+end
+
diff --git a/B6-TCU/B6-temp-TCU-main-in-the-middle-new-approach-now-with-replacement.txt b/B6-TCU/B6-temp-TCU-main-in-the-middle-new-approach-now-with-replacement.txt
index 64a3c20b..39daf597 100644
--- a/B6-TCU/B6-temp-TCU-main-in-the-middle-new-approach-now-with-replacement.txt
+++ b/B6-TCU/B6-temp-TCU-main-in-the-middle-new-approach-now-with-replacement.txt
@@ -79,33 +79,8 @@ fakeTorque = 0
 rpm = 0
 tps = 0
 
-function xorChecksum(data, targetIndex)
-	local index = 1
-	local result = 0
-	while data[index] ~= nil do
-		if index ~= targetIndex then
-			result = result ~ data[index]
-		end
-		index = index + 1
-	end
-	data[targetIndex] = result
-	return result
-end
-
-function setBitRange(data, totalBitIndex, bitWidth, value)
-	local byteIndex = totalBitIndex >> 3
-	local bitInByteIndex = totalBitIndex - byteIndex * 8
-	if (bitInByteIndex + bitWidth > 8) then
-		bitsToHandleNow = 8 - bitInByteIndex
-		setBitRange(data, totalBitIndex + bitsToHandleNow, bitWidth - bitsToHandleNow, value >> bitsToHandleNow)
-		bitWidth = bitsToHandleNow
-	end
-	mask = (1 << bitWidth) - 1
-	data[1 + byteIndex] = data[1 + byteIndex] & (~(mask << bitInByteIndex))
-	maskedValue = value & mask
-	shiftedValue = maskedValue << bitInByteIndex
-	data[1 + byteIndex] = data[1 + byteIndex] | shiftedValue
-end
+-- include utils.lua
+-- endinclude
 
 function relayFromECU(bus, id, dlc, data)
     onEcuTimer : reset ()
diff --git a/B6-TCU/can_ids.lua b/B6-TCU/can_ids.lua
index 4a3ccb7c..dd62bbd1 100644
--- a/B6-TCU/can_ids.lua
+++ b/B6-TCU/can_ids.lua
@@ -20,9 +20,5 @@ MOTOR_INFO = 0x580
 MOTOR_7 = 0x588
 
 
+Diagnose_1 = 2000
 
-
-
-ECU_BUS = 1
--- really 'not ECU'
-TCU_BUS = 2
\ No newline at end of file
diff --git a/B6-TCU/utils.lua b/B6-TCU/utils.lua
index 447a9c9f..03279a6a 100644
--- a/B6-TCU/utils.lua
+++ b/B6-TCU/utils.lua
@@ -1,3 +1,16 @@
+ECU_BUS = 1
+-- really 'not ECU'
+TCU_BUS = 2
+
+totalEcuMessages = 0
+totalTcuMessages = 0
+
+function relayFromTCU(bus, id, dlc, data)
+	totalTcuMessages = totalTcuMessages + 1
+--	print("Relaying to ECU " .. id)
+	txCan(ECU_BUS, id, 0, data) -- relay non-ECU message to ECU
+end
+
 function xorChecksum(data, targetIndex)
  local index = 1
  local result = 0
@@ -78,3 +91,8 @@ function silentlyRelayFromECU(bus, id, dlc, data)
 	totalEcuMessages = totalEcuMessages + 1
 	txCan(TCU_BUS, id, 0, data)
 end
+
+function silentlyRelayFromTCU(bus, id, dlc, data)
+	totalTcuMessages = totalTcuMessages + 1
+	txCan(ECU_BUS, id, 0, data) -- relay non-ECU message to ECU
+end
\ No newline at end of file