WOW It has not been said enough or maybe it has been. If you are looking for ZERO DRONE at all speeds If you are looking for stealth stock style sound when cruising around town If you are looking for insane rumble of doom when you get on the gas If you are looking for the devil himself yelling from the depths of hell when at WoT Corsa is the way to go. End of story.
It won't affect smog at all. At least not the places I go to. The Corsa exhaust, like most, is 50 state legal but more importantly it meets the requirements of a OEM replacement part. So even if I did get some arse of a smog tech, I can go to the DMV with docs and get it fixed. The only other mod I am planning on is the CnL intake and Brenspeed tune. And remember, Midas installs Magnaflows and Flowmasters here in SOCAL all day for newer cars! They are even louder!
Hint hint: if you want to make your Corsa's loud, no wait, I mean LOUD, go with an offroad H pipe after your next smog inspection. Then you will truly say: