No idea Nigel, I assumed there would be to reset learned values from the old one. Perhaps disconnecting the battery for 10 minutes may have the same effect. Not entirely sure. I dare say the values would update as I'm driving and are re-learned, but it may run lumpy/give bad mpg until it does.
Best thing to do is give @DJAlix a PM and he’ll help you out. I think it will be exactly the same for an A7. As for price, I’ll PM you what my kit cost but it may differ for other kits. Always best to speak to Alex
Easy to fit. Strip down of rear end but I have rods for fishing wires through trim so wasn’t too bad as didn’t need to fully strip out and still followed OEM wiring. If you PM me I can send you instructions on connections and coding with VCDS
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