I run the Flowmaster 40. I like it. It's great when you punch it, but it's not too loud on the freeway. I left the chrome tip on mine, and haven't mashed it out in the mud and rocks yet. But the tip makes the sound come down outside the car, and you can hear it better when you're standing behind it. I know a guy that has the same system with a stock tip so it stays up under the body, and I don't think it's as noticeable when it's ideling. I like it better than the Corsa. But that's just my opinion.
My husband installed it in the shop, and then we had the muffler shop weld it. It took him about an hour to cut the old one off and clamp the new one on. Good luck.
