![]() ![]() Depending on the person, the shortcomings may be worth the potential benefits. Despite all the benefits that can be reaped from ECU tuning, it does have its shortcomings. Never know if you will need them again and these are very specific and not easily replaceable.Ģ7.Like every scenario, there are benefits and downsides to ECU tuning. Save and archive all files you created during this process. You may want to put sealant here to protect from water or dust damage.Ģ6. Carefully remove the jumper cables you soldered in step 4.Ģ5. Click on OK.ĮEPROM files are now written to the destination ECU.Ģ4. Leave all boxes with the default selections. On the second box "Password, select browse because the default password does not work.īrowse to the file you saved in step 18. Leave the verify&fix CRC checked and click on write.Ģ2. ![]() Now change the second box to TC797 EEPROM. It should report success and then press OK.ĬPU files are now written to the destination ECU.Ģ1. You should see the PCMTuner app erasing and writing files and this may take 5 minutes or so. Leave all boxes check but you MUST uncheck Write SW Areas Only, Skip service areas. Leave the verify&fix CRC checked and click on write.Ģ0. Now change the second box to TC797 Micro. It will then ask you to save the file.ġ9. Click on read and you should get some dialogue that it connected and operation was successful. The second box you will need to select Module 53 Under the Password Group and selectġ8. Double check the you are now working with your correct destination ECU.ġ7. Unplug your source or original ECU and now plug in your destination or other ECU that you want the source or original ECU data cloned to. This is the EEPROM and related files you just saved.ġ5. On the second box "Password, select browse because the default password does not work. Leave the verify&fix CRC checked and click on read.ġ4. This is the CPU and related files you just saved.ġ3. It will then prompt you to save the file. It should report success and then press OK. You should see the PCMTuner app copying and this may take 5 minutes or so. On the second box "Password, select browse because the default password does not work.īrowse to the file you saved in step 10. Leave the verify&fix CRC checked and click on read.ġ2. This is the password file for this specific ECU that you will need later.ġ1. There is a MED17/EDC17 GPT but that did not work.ġ0. The second box you will need to select Module 53 Under the Password Group and select Make sure PCMTuner "J2534: Scanmatik - SM2 USB" is listed in the Interface boxĩ. The wires are labeled, use the white labels for reference.Ĩ. This describes the connections required except for the colors are wrong and it makes no mention of the boot pin. PCMTuner comes with an application called ECUHelp. One wire connects to the boot pin wire (you soldered this one earlier), an S1, an S2, two positive 12 volts, ground, CAN High, and CAN Low. ![]() ![]() If done correctly, you should have 8 wires connected to your ECU. Connect the wires per the wiring diagram to your source or original ECU. Setup and install the PCMTuner software.Ħ. Solder a wire onto the boot ping/pad location on each ECU.ĥ. Off the covers without any bending or other damage.Ĥ. Make sure the blade is only exposed enough to cut the sealant and not far enough to touch the sensitive electronics. Repeated this process until the covers came off enough to use a razor blade to cut the sealant. Went around and tightened the screws 1-2 turns. Heated up the ECU with a heat gun carefully. Screwed these new larger screens into the ECU until there was resistance. Large to screw into the threads on the main body of the ECU. Bought some screws that are the same size as the diameter of the holes on the cover and too You absolutely do not want to confuse them or the order of operations.ĭetails: Removed the screws holding the covers on. Original and another one to clone your original too)Ģ. Buy a ECU with the same part number and specs (you need two ECUs. Windows 10 PC with at least two USB Ports One original ECU and the other was from another vehicle) Cloning or doing any changes to an ECU is risky and could result in a large bill from a mechanic or the dealer.Ī 270 900 09 00 <-2 of these. I am not responsible for any damage or loss as a result of following these instructions. How I cloned the ECU on my 2014 Mercedes CLA 45 AMG. ![]()
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