Oh yea.. one more thing, once you fix everything, or clear all the codes and the system is cool, you should get a steady BLINKING or "on-off-on-off" flashing on the "check eng light"

That's when you know it's a done deal <img src="/forums/images/graemlins/kewl.gif" alt="" />

And yes, you can run without the butterfly, pass smog and be 100% cool with the ECU <img src="/forums/images/graemlins/cheers.gif" alt="" />