Hmm a thing to investigate what else does the ECU think is on?
Mine since yesterday around about 800 rpm at idle after warming up, today I noticed it a shade under 1000rpm when the radiator fan was on at idle, so I wonder if idle is adaptive to load?
Mark - No Longer driving Archie the Old English Sheep Mog........... 2010 Roadster 3.0 V6 (S3)