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Questions about Motronic DME

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Old Jul 3, 2021 | 05:50 PM
  #1  
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anteuzer
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Default Questions about Motronic DME

Hi,

I am currently experiencing troubles with my Motronic. I am looking for a good unit to replace it, but as my car is from Japan, I do not know if Motronic from Euro cars or US cars will be ok. My 964 has also a tiptronic transmission.

This is a picture of the original Motronic :




Do you think that any Motronic with the same reference 911.618.124.03 will fit ?

Thank you for your help !

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Old Jul 4, 2021 | 12:01 AM
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Default

Originally Posted by anteuzer
Hi,

I am currently experiencing troubles with my Motronic. I am looking for a good unit to replace it, but as my car is from Japan, I do not know if Motronic from Euro cars or US cars will be ok. My 964 has also a tiptronic transmission.

This is a picture of the original Motronic :




Do you think that any Motronic with the same reference 911.618.124.03 will fit ?

Thank you for your help !
Example the problem. The 964 DME ECM rarely has problems. All 964 DME ECMs will run in all 964s.
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Old Jul 4, 2021 | 04:08 AM
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anteuzer
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Hi Loren,

Thank you for your reply.

I had the motronic sent to FVD Germany for modification in order to fit a MAF kit.
It never worked properly, with a terrible idle, loud bangs in the exhaust, and black smoke.
So I sent it back to FVD, they put it back to original specs, and I restored the original air flow meter in the 964. It did not solve thz rough running.
Since it had always worked perfectly before, a friend of mine put my motronic on his 964 and it ran like mine, so I suspect something was damaged in the motronic during the operarions made by FVD....

Thank you so much for your help !
​​​​
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Old Jul 4, 2021 | 12:45 PM
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Lorenfb
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From: SoCal
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Originally Posted by anteuzer
Hi Loren,

Thank you for your reply.

I had the motronic sent to FVD Germany for modification in order to fit a MAF kit.
It never worked properly, with a terrible idle, loud bangs in the exhaust, and black smoke.
So I sent it back to FVD, they put it back to original specs, and I restored the original air flow meter in the 964. It did not solve thz rough running.
Since it had always worked perfectly before, a friend of mine put my motronic on his 964 and it ran like mine, so I suspect something was damaged in the motronic during the operarions made by FVD....

Thank you so much for your help !
​​​​
Yes, unfortunately that's what occurred. They owe you a good 964 DME ECM!
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Old Jul 4, 2021 | 03:55 PM
  #5  
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anteuzer
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This is my opinion too, but they absolutely refuse to admit that they caused my motronic to fail...
​​​
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Old Jul 5, 2021 | 12:40 AM
  #6  
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From: SoCal
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Originally Posted by anteuzer
This is my opinion too, but they absolutely refuse to admit that they caused my motronic to fail...
​​​
Other than a simple chip replacement, DME ECM mods are risky.

Last edited by Lorenfb; Jul 5, 2021 at 12:44 AM.
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