I was reading on Moddedmustangs and some guy said that even though you get longtubes and get a tune to turn off the rear O2's that the code is still there, is that true? i thought that after a few cycles or whatever the code was out of the cars system. i turned mine off. i really want longtubes ( and a cat back and springs and window tint...sucks being broke haha) but i have to pass emissions which is just a thing where they scan your computer. any advice would be sweet

 

When you turn off the rear O2's there off for good. ModdedM is a bunch of fools.

 

This man speaks the truth.
The only reason I can think of that light stayed on was that he didn't reset the pcm memory so the light just stayed on.