NefMoto > Noob Zone > Noob Questions (Moderator: turboat) > cross flashing 551AA ecu
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Author Topic: cross flashing 551AA ecu  (Read 2638 times)
dilly
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« on: February 17, 2020, 08:43:59 PM »
i understand both the s4 and the 4Z7-907-551-AA ecu are me7.1.1
would flashing a m-box file on the 551AA ecu work? or are there different properties to each ecu that will cause issues?


i recall on a thread that someone mentioned that all 2.7 me7.1.1 flashes will work on any of the 2.7   7.1.1 ecu's
anyone care to elaborate?
thanks
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nyet
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« Reply #1 on: February 17, 2020, 09:15:37 PM »
Quote from: dilly on February 17, 2020, 08:43:59 PM
i understand both the s4 and the 4Z7-907-551-AA ecu are me7.1.1
What? Who said S4s are me7.1.1?

http://files.s4wiki.com/stock/part-numbers.txt
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dilly
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« Reply #2 on: February 18, 2020, 12:35:28 AM »
Quote from: nyet on February 17, 2020, 09:15:37 PM
What? Who said S4s are me7.1.1?

http://files.s4wiki.com/stock/part-numbers.txt
ah got my numbers mixed.
so scratch the 7.1.1 ecu..will the theory apply still as long as it is me7.1 for 2.7?
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nyet
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« Reply #3 on: February 18, 2020, 01:21:34 AM »
Quote from: dilly on February 18, 2020, 12:35:28 AM
ah got my numbers mixed.
so scratch the 7.1.1 ecu..will the theory apply still as long as it is me7.1 for 2.7?

Depends what you mean by crossflash
By vehicle:
RS4 and S4 have differences (cam position sensor, intake flap), 512k vs 1024k won't crossflash, Bosch/Hitachi MAFs require different MAF maps, there are eeprom coding restrictions for some combinations, there are CANBUS differences for some combinations.

By ECU:
All 2.7t ME7.1 ECUs are physically the same except for 512k vs 1024k issues.
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
dilly
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« Reply #4 on: February 18, 2020, 09:55:11 AM »
Quote from: nyet on February 18, 2020, 01:21:34 AM
Depends what you mean by crossflash
By vehicle:
RS4 and S4 have differences (cam position sensor, intake flap), 512k vs 1024k won't crossflash, Bosch/Hitachi MAFs require different MAF maps, there are eeprom coding restrictions for some combinations, there are CANBUS differences for some combinations.

By ECU:
All 2.7t ME7.1 ECUs are physically the same except for 512k vs 1024k issues.
Indeed
I’m aware of the rs4 info
Also the maf differences. purpose of this is I have a riser chipped an a box and don’t want to boot mode every time I make a change.
Was looking for a cheaper alternative instead of the price markup for the m box and other a boxes
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