thank you lee, i only know how to maintain my rst, i havent a clue when it comes to cossies, i know the plug you meen, i had unpluged it last week too, when i fitted some bling from N.D,so i will look at ALL these suggestions first thing tomorrow,

regards DAVE

lee, could it be the fact the k+n was fitted in replacement of the std air box,last week, and its not been adjusted in any way, ie fueling and all that.