Is it worth it to upgrade the exhaust system in my Ford Fiesta?

I've been thinking about upgrading the exhaust system on my Ford Fiesta to improve performance and sound, but I'm not sure if it's worth the investment. I don't want to spend a lot of money on something that won't make a noticeable difference. Has anyone here done this upgrade? What were your results?

I upgraded my exhaust system on my Ford Fiesta and it made a huge difference in both performance and sound. I highly recommend it!

I did the upgrade on my Fiesta and didn't notice much of a difference. Save your money.

I personally haven't done the upgrade, but I've heard from several friends that it's definitely worth it. They saw a noticeable improvement in their Fiesta's performance.