"service engine soon" light!

Hey guys, I just recently installed a bored out 52mm throttle body on my lt1 and for some reason my "service engine soon" light has come on. The car seems to run great and I have all the plugs and senors hooked up. Any ideas?

I assume it is a 1997. Stop by Autozone and they will scan it for free. Just make sure you get the exact code number from them. Sometimes they interpret it incorrectly.