ok i have a 2000 Sir(si) and my Vtec does not got off.... ive had the car sine January and changed the oil twice i know its not the oil.... i didnt really even know what vtec was until i drove my friends Sir then felt and heard it... he drove mine and said my vtec doesnt work... i have redlined it but still nothing. would it be the ECU because thats what i was told it could be the problem? and do u guys think this is going to be expensive?