I am considering removing the 2 smaller cats on my 01 5.4 super crew and installing 2 free flows.the issue that comes up is the o2 sensors apparently i cant get any plugs to fool them..my question is will my edge tuner get ride of the engine lite...most importantly will my truck run fine with 2 free flows.

 

You can clear codes with the Edge. I don't know if it'll keep coming back or not however.

 

they make o2 emulators