I also looked into log for my diesel what with fuel prices and the ultra low emission zone but tfl say it wud be 80 % 20 % so they wud still charge if I enter the ulez so I to am going for a remap stage 1 from top gear at £250 15 to 20 % better fuel consumption and increased power even thou I don't need any more power but I have been told it will prolong the life of the turbo