Well I took my car in to see if the vtec was working on my 97 GSR, sure enough it is. I questioned that my vtec was not working because I couldn't hear it kick in. I thought that you were spposed to hear the engine get louder when the vtec engaged? Mine you really can't tell that much of a difference. My friends RSX type S is loud as hell, I know his engine is bigger but even he said he thought it should be louder. could there be a problem that the shop didn't tell me about or is this just somthing I'm going to have to live with?