My friend took his RS6 to MRC on the 11th June, went on the rollers for a preliminary standard power run and it showed an error in the cooling system on the car, MRC weren’t keen on continuing working with the car as it had a 'fault'. They said it could be something as trivial as a poor batch of VPower but told him to go away and come back.
Car went back to Audi Carlisle and straight on the diagnostics, it showed nothing, so whatever the problem was at MRC had cleared itself by the time he got home.
Car went back to MRC on Friday last week and made a very comfortable 681 hp and 1040nm.
The guys at MRC said they could have got the magic 700hp but didn't want to push it too hard for no reason, they also mentioned that the fact it was 27°C didn't help, could have done with being a little cooler.
Apparently his drive home was epic
I'll stick the graph up later on