Quote Originally Posted by whiskychaser
Gave it a go today. Changes did seem slightly different and I didnt seem to have to push the go pedal as hard. What I can say for sure is before I disconnected the battery leads, the OBC said 18mpg. I did a 60 mile roundtrip with mixed driving and its reading 22 now This may have more to do with fuel supplier, outside temp or humidity. Maybe its just karma.
22mpg out of an M50? :o