
that said, I've been searching this board for RS6 specific info, but only found the RS4 import to Josh at Achtuning.
I've got a MPH/KPH cluster so I'm OK there.
JK has emailed me with : "For EPA it will need complete emissions system from tank to 02 sensors to catalysts to wiring harness. The codes (currently throwing code Fault 17831/P1423/005155 - Secondary Air Injection System; Bank 1: Insufficient Flow) you are telling me about lead me to believe nothing is on the car for obdii and so those parts and programming could be a additional "
Anyone with any thoughts or suggestions on the above or how to avoid any pitfalls?