When I got the car it was giving me around 30mpg on the trip computer for the first week.
I had new tyres fitted and changed the oil and filter and now it's hovering about 26mpg for the same trips.
Still the same after installing the bluefin. well got 16mpg on Friday after a stressful day at work
I have since changed the fuel filter and spark plugs and it has increased slightly (28mpg) so I'm not sure if mapping the car is making any improvement.
I'll just leave the map on for the trip
Hopefully a long drive at a steady speed might clear things up a bit
But think I will put the standard map on at some point so I can appreciate the bluefin