If your getting a P0136 Downstream Heated Oxygen Sensor circuit fault - Bank No. 1.
Then your Mil Eliminators aren't working.
Do you mean this
How to? I understand the logic for people to make there own Mil Eliminators, but why not just spend a
couple of extra bucks and get some that you know will work..
i.e.
http://www.ponyexpressperformance.com/mileliminators.html 
