What do you think is really loud? I have a 3 foot pipe off of a chikara header on a D16Z6, and its not really loud, its raspy as hell, but not really loud.

Do you meen like seting off a car alarm when you drive next to them, loud?

If thats what you meen then no its not that loud. I have heard that system on a D16, and its not that great.... APEXI N1 system sounds sweet. But its all bout the $....