chirpitgsr

after the install of my testpipe on my 00 GSR .. the check engine light went on after 20 min's of driving.. there is an o2 bung but the light still came on.. tommorow im going to reset my ecu.. but for some reason i dont think it will cure the problem..
anyways.. if it doesnt.. will i be loosing power?? i mean i know why the engine light is on.. its cuz of the testpipe.. i just wanted to know if it was ok to just drive with the CEL on knowing why it was on.