Does what it needs to
This is my second corsa system. (First was xtreme on my mustang) This system isn't bad. There is the usual helicopter sound going into v4 which I got rid of with a Diablew tune. There is a resonance droneish noise at about 1750 RPM which unfortunately is highway cruising RPM. Talking to Lew (the diablew tuner) to see if I can get cruising rpm at over 2k. TL;DR Helicopter sound going into v4 and resonance sound at ~1750 RPM. Get a tune and that should fix it. Or just muffler+AFM delete.
Great exhaust system
I purchased my exhaust system a few weeks ago and I love it. The only thing I haven't done yet is tack weld it to the frame of my truck. I will say though, I am someone who doesn't want my vehicle to be obnoxiously loud, while still being throaty and rumbles, and this was perfect for me. The sound is just what I was looking for and the throttle response gain was a pleasant surprise. In the interest of full disclosure, I had someone else install it, so it was very easy for me.