sorry for the late reply tony,when i ran the bike before stripping carb`s it was surgeing alot,especialy around 50mph, that`s the main reason i stripped & cleaned the carb`s in the first place, i must say though the carb`s were realy clean no build up of varnish or gum ect,& yes to the airbox bit mate everything on the bike appart from the exhaust is orig,did try a new tps unit a few month`s ago with no success, just getting a bit fed up throwing money at it for nowt, also tryed new dyna coils which made no diffrence either, so ive put orig one`s back on for know, i bought it with this new full system on & it`s ran like this from when i bought it, i will bear in mind the colour tune kit though mate,cheer`s,were did you pick that up from if you dont mind me asking? was it the bay