Hi, I am new to the forum too however Im on my 2nd XT660 now (2007 model ) as I liked the first one that much ! Gone a bit further though with this one and have a Stage 1 filter, Power Commander and a stage 2 filter waiting in the wings (when Ive got to the bottom of the Power commander adjusting fuel below 4000rpm.) Chucking 47.5 BHP at wheel out at mo despite running a bit lean below 4000rpm ! Picture of my bike to follow when I have sussed how to do it !!