yes it must have been lessening the tension...as it was that hssssh noise i was after, sorry im tryn to explain best as i can...but when i went to him today, all i said was put the blow off valve back to the way it was...but as i said he said, basically the BOV is stuffed, somthing like that an that he had blocked it, i assume so the air cant get out, no hsssss, hey all i want was it to stop stalling...thanx you for your advice though,,but its hard...as i say to my machanic...i know nothing about cars...but i know how my car feels and drives..