O2 Simulator Mil Eilminator no cat

[pontiac80]

O2 Simulator Mil Eilminator no cat
Hello:

I have a 03 Blazer and my rear cat is bad. I want to eliminate it but the Check engine light will go on.

How do I fix this problem? I see they make a part for this called an o2 simulator. This one company says it might not work on 03 s10s. Doses anyone else make this?
http://www.afterthoughtsauto.com/o2sim.html

What is a Mil Eliminators? How doses this work and how do I wire it? Has anyone used this?
http://mountain-mods.com/site/index....od&productId=5