Hi, last couple of months I've noticed that when I come to traffic lights ect and I come to a stop, my car seems to rev on its own to around 1500rpm. Also I found out ... I know it's stupid but when I pump my brake pedal it revs again. :s I cannot think what the problem is. I have a milltek cat back. Itg induction kit , forge spacer valve and I'm running MTM stage 1. Does any one know what the problem is ?