Hey everybody!

I just purchased a 2004 Audi A4. Just wanted to know what your guys' exhaust set ups are? I already have an aftermarket exhaust, I need a down pipe but im not sure what size to get. I have a 1.8t and I've heard that 3" is too big for a 1.8t? Also I want to leave the catalytic converter but my friend is telling me to remove it to make it louder lol. Will it stink that bad? lol

thanks guys, looking forward to making the best out of these forums!