Aveo 07 sputters at starting

I just replaced the vacuum hose (the third hose above the E-TECH II letter) as shown in the picture. The car started to sputter for about 4s every time I started it and smoothed out afterwards. It's been doing this since I replaced the hose.

aveo 07 engine - Bing images
http://www.bing.com/images/search?q=...8H0&ajaxhist=0

History? How was it running (what was it doiing) before you replaced the hose? Any other recent performance issues? Sounds like an IAC issue, but that probably depends on what else has been going on.

Heck it could even be spark plugs.