Just did these mods to my WR yesterday. Road it in the morning then mod'ed, then an afternoon ride. All I can is it was not the same bike for the PM ride. Last time I felt a power change that drastic in any vehicle was when I slapped on a supercharger to my already hopped up Mustang. Had the bike in a tight MX course yesterday and was shocked myslelf how nimble and responsive the bike was in those tight turns.