Okay so Pro M has gone out of business right? I have a Pro M 75mm mass air and it is calibrated for 24# injextors and an elbow...which is what I have. However, I think that my B303 is causing small problem. When I start the car almost always have to start it twice and when it is started the idle is really low and not smooth. After I rev the engine slightly it all smooths out. Also at a really low speed the car is a little jerky. Is this because of the cam or is it the Pro M? Does anyone know where I could get my Pro M recalibrated to maybe help fix this? I know it is trivial and probably some that I will have to live with but I am a perfectionist.