My B14 is a California Emission car.. Does anyone know what exactly that thing is? I was wondering what the difference was. I think it has more emission crap on it, but by looking at the car, I can't see the difference. It has close cupled cat, and front and rear O2 sensor like other models. Does Cali emission cars suppose to be slower than federal spec cars? If anybody knows and can point the difference, please teach me.