Re: Powercommander, I have fitted a commander to my 52 plate and found it to be a great improvement to midrange power and also bottom end power: IE:pulling power from 18mph in top gear. When I fitted my commander I allso fitted a K&N filter as the engine seems to breath better. When you buy a commander kit you need to buy a overide plug to disconnect the lamder sensor so that the power comander is able to work. In the commander kit you should receive a patch lead, a power lead and a CD to load on a PC and this has program to enable the commander to be set to the indevidual spec of your bike. If you are do not have the CD the program are available on the power commaner site on the internet.