I need some help with my car I have a N/A zc/z6 ran strong. I was coming from my friends house when i met a mustang gt on the freeway. He started to rev his engine so he gave me no choice but to hand him over a ass kicking. well we started to race I took him on fourth gear and i still went to fifth gear. that is when it happen my car started to bog. got home check it out cant find the problem change the sparkplugs, rotor, cap, wires still nothing i know it has to do with either gas or spark because the sparkplugs were black full of cabon and my car is taking out smoke and it realy smells like gas. I was told that the fuel pressure regulator is bad that is why its sending alot of gas and not stopping it. I really dont know what to do please help!!