Should I remap my audi s5 3ltr v6 Supercharged ?

Hi all, I live in London and the question is the title, Should I remap my audi s5 3ltr v6 Supercharged to stage 1 ?? my friends are telling me to do it as it will be a lot better etc, I do like speed, but in London, where can you go that fast really.. but please let me know what you lot think and where is the best place to get it done, thank you