Selling stage 2 ecu by unitronic, immobilizer defeated. It is for an Audi B7 A4 with the same part number, it was on my 08 b7a4. Simple as taking the old one out and putting this one in. It was $150 for the ECU and was tuned for around $600. That is $750 new and am selling for $450. It's great to have two different ECUs to swap in and out when needed, especially when you sell your car like I did. Make me and offer I left a link below of unitronics page.
https://www.unitronic-chipped.com/ecu-tuning/Audi-A4-B7-20l-TFSI-2006-2008-stage2
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