hello all new here but have been reading posts for a few weeks trying to get most data i could before my venture.

over the past few weeks i have installed a complete HHO systems from componants i have aquired in hopes of doing some fianl testing and hopefully getting some better milage
so here's the deal

i had a couple of extenders around that i installed a bit ago to help fool the pcm into better milage and i did pick up a couple mpg with them installed
this weekend i installed my efie and cranked up my genorator

I'm pretty confident the efie is correctly installed and i can see it doing trim adjustments
but i notice the active light never flashes
i also notice i am having issues with both 02 heater circuts
thus the truck goes into open loop if sitting still at idle to long ( 5 minutes)
has anyone ever had issues with extenders and efie together like this?

simple is to pull them back out which i will do asap and see what the result is but i am curious if this is normal?