just got timing belt replaced, exhaust seems louder, is my timing off

[eclipsegst24]

I just got my timing belt, water pump and other belts replaced. My car seems to drive different than before, the exhaust is louder, and it idles a little rough, steering wheel vibrates. Is my timing off, do i need to take it back to my mechanic, or does this all sound right, all i know is it dont run the same as before. It seems to have a little more power than before, or maybe im just imagining it. Please let me know if this is ok or if im in danger of messing up my engine if i keep driving it.

 

[leet]

If you are running stock cams, and it is idling rough, check your timing.