So I decided to gut my high flow cats seeing as one of my band clamps on them was broken anyways and I have the simulators installed but just popped a code for them. I got the simulators from American muscle a while back. They didn't line up perfectly with the slot and key so I filed down the ear on it and they fit just fine. Anyone else have this problem? I have a Diablo tuner but can I just delete the code whenever I have to bring it in for emissions and they shouldn't be able to see it right?