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Difference between S6 AQJ and ANK engines?

The C5 S6 engine was updated around W reg and the engine code changed from AQJ to ANK I believe.

What changed please? Reliability updates?


Anyone please?
Happy new year!

From a quick google of a German website it looks like some of the electronics (valves), harnesses and the ECU are different and there's a few extra valves on the new one (N335 and N156). Forum Index -> Audi S6 & RS 6 (C5) quattro
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