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A6 4B 2.5 TDI AGR limit exceeded

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JanekA6



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Post15-10-2009, 0:43    Subject: A6 4B 2.5 TDI AGR limit exceeded Quote
Hello, I did a engine swap on an Audi A6 2.5TDi, year 07/2003, from a BDG to an AYM engine, and the fuel injection pump worked fine icon_smile.gif.
"I've only just exceeded the EGR valve regulation limit. How can I fix this? Or does the BDG model have a different EGR valve?" Can anything be recoded there?
Best regards, Janek.


Translated on 03-07-2026, 14:19.
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christians
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Post15-10-2009, 11:49    Subject: A6 4B 2.5 TDI AGR limit exceeded Quote
The BDG (likely referring to a specific engine component) has a cooled EGR (Exhaust Gas Recirculation) system and a throttle valve to increase the EGR rate when necessary. Do you still have the BDG control unit installed?
Gruß Christian
A6 BPP, Ex-A6 AKN (Gurke), Ex-Audi100 92 AAT (5Zyl.)


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JanekA6



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Post15-10-2009, 11:56    Subject: A6 4B 2.5 TDI AGR limit exceeded Quote
Okay, the BDG engine control unit is installed, and I also have the throttle body from the BDG engine.


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JanekA6



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Post15-10-2009, 12:04    Subject: A6 4B 2.5 TDI AGR limit exceeded Quote
Okay, the BDG engine control unit is installed, and I also have the throttle body from the BDG engine.


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christians
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Post16-10-2009, 10:22    Subject: A6 4B 2.5 TDI AGR limit exceeded Quote
Please measure the MWB 3, both with and without the EGR system activated, and check if the readings are reasonable.
Gruß Christian
A6 BPP, Ex-A6 AKN (Gurke), Ex-Audi100 92 AAT (5Zyl.)


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