I think that this is fake. Notice that when he does the U turn at ... the tire squeel sounds very high pitched, like he was doing donuts in a priking garage or the go-karts at andrettis or something. It just seems to me like the audio track was altered. I dont THINK that just getting a diffenent exhaust on your car can change the actual tone of it THAT much. I'v had several different exhausts on my car and they all had differnt tones, one might be a little mellower than the other, but the overall sound was the same.

But reguarledss if this is fake of not. I have two ducati mufflers sitting in my room. I'm going to gut one out and put it on to see what it sound like. I think that it will sound just like thae fart cannon on ther now, but I'll post videos.