Would it be crazy loud if I just ran straight pipes out the back from the headers?

Guys out here run "test pipes" in place of their cats and then run nothing but pipe to a chrome tip. That is some loud rice, and it sounds different too as there is only 4 pulses but they wind them out to 6K on every shift. If you ran a crossover right past the collector, I bet you could get away with straight pipe if you dont blip it in front of a cop. Turbos remove most all pulses (frequency) so they are alot quieter but have their own sound.