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quattroworld.com Forums: OBD 2 port on a 98 C4 A6 (should be same as 96 and 97 A6 and 97 UrS6 (location but not OBD2)
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OBD PLUG DRL! アウディ A1 S1 A3 S3 RS3 A4 S4 RS4 A5 S5 RS5 A6 S6 RS6 A7 S7 RS7 A8 S8 Q2 Q3 RSQ3 Q5 SQ5 Q7 TT TTS TTRS
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Unitronic Performance Software for 3.0TFSI EA839 engines - Now Available, OBD2 Port Compatible with UC+
![Unitronic Performance Software for 3.0TFSI EA839 engines - Now Available, OBD2 Port Compatible with UC+ Unitronic Performance Software for 3.0TFSI EA839 engines - Now Available, OBD2 Port Compatible with UC+](https://www.getunitronic.com/media/images/blog/b9-s4-s5-sq5-software/IMG_7409-2crop2-web.jpg)