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Can i buy an extra ECU for a tune?

 
Old 02-10-2019, 12:48 PM
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Originally Posted by chiromikey View Post
I highly doubt you bought a used ECU for $250 and am even more skeptical Kleemann was able to erase the old vin coding and rewrite it with yours.
i bought a used gle550 ecu that was in a huge accident for $300 on eBay, works just fine on my e63S. I saw some cheaper and some more expensive on eBay when I was searching

Obviously this is a 2015 thread and I finally tuned my ride in 2018 by AMS in West Chicago IL and it was flawless. No issues for them to close on oem ecu then to tune the eBay ecu
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Old 02-10-2019, 12:58 PM
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Old 02-11-2019, 01:56 PM
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Sorry for the novice question, but are you saying the ECU you re-flash doesn't even have to be from a M157?
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Old 02-12-2019, 12:22 PM
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Originally Posted by Davidkuo0330 View Post
I would think if a Merceded ECU was bad, Mercedes verified bad that they replace it for free? Warrantee or not. Just saying.
Nope. ECU is considered an emissions component. All Emission components are covered up to 80k miles. At least in the US I believe. Perhaps elsewhere too.
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Old 02-12-2019, 12:49 PM
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Oops! I probably should have blacked out the 2D barcode too. LOL. Oh well.
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Old 02-12-2019, 03:07 PM
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Solved! Blocked Out
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Old 02-12-2019, 06:16 PM
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OK, so these last 2 posts don't make sense because I requested the one before them to be pulled as I missed the digital barcodes on my OEM ECU. On to what should have been posted:

Here is what you look for if you are going to get a used ECU. Notice the character string underlined in red. This should match for a suitable ECU. For my string, I found about 6 options on Ebay averaging ~$600 for my string.

Blacked out ECU label is my OEM. Label below is my 2nd ECU (if I were to have one. ).

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Old 02-12-2019, 06:47 PM
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I hope one of the tuners will chime in, but from what i know, in order to clone the 2nd ECU for your VIN, the tuner has to physically open the stock ECU and extract data from it.

I am afraid this action alone will be a dead giveaway. Besides seeing that it was physically opened, i am certain that MB can see that data was extracted at some point.

If there is a way around this i am not aware of, i am getting a tune today!
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Old 02-12-2019, 07:14 PM
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Originally Posted by V-AMG View Post
I hope one of the tuners will chime in, but from what i know, in order to clone the 2nd ECU for your VIN, the tuner has to physically open the stock ECU and extract data from it.

I am afraid this action alone will be a dead giveaway. Besides seeing that it was physically opened, i am certain that MB can see that data was extracted at some point.

If there is a way around this i am not aware of, i am getting a tune today!
Your concerns are valid. However, I can tell you that a tech would have to examine the ECU practically with a microscope. Very difficult to find the signs of tampering. This is not anecdotal. It is a fact. Also, I can tell you first hand that I had major warranty work done with an ECU that might Have been data-extracted and not even a blink.

Lastly, I have yet to hear from a single person on this site how they were denied warranty work as a result of suspected ECU tampering or the like.

So to you Sir I say:

GET THAT TUNE TODAY!!!!
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Old 02-12-2019, 09:39 PM
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^ +1 Most techs are really not that bright, and wont ever go that in detail to check for tampering. Most reputable companies who do open the ECU's, you cant even tell it was touched.
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Old 02-13-2019, 07:09 AM
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A
Originally Posted by R5169 View Post
Sorry for the novice question, but are you saying the ECU you re-flash doesn't even have to be from a M157?
the ecu used for the m157 is an ecu also used in other benz amg and non amg v8 applications ... so yes

and my donor ecu came from a gle550 that was in a wreck

Last edited by PeterUbers; 02-13-2019 at 09:05 PM.
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Old 02-13-2019, 09:04 PM
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Btw kudos to vrod for helping me navigate the second ecu concept and setting me up with the right tuner!! Before he guided me I thought this was all theory

but it's quite possible and quite easy!
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