Header, Intake, & Exhaust - Wicked Performance Exhaust!

I just added a Wicked Performance Cat-Back Exhaust System on my car.
Or could be made by Perrin Performance, anyways it sounds smooth with
a nice deep tone on my car could it be from my VTEC engine.?

2003 Honda Civic EX Coupe VTEC Engine

i doubt that would affect the tone of the exhaust (maybe at high revs).