i have been on the phone with epa. emissions, and every exhaust store from here to BFE. Every shop told me they could not delete my two rear cats so i got on the phone with epa and ems. They did alot of research for me and called me back today and informed me that it was illegal to do so until 80k miles. Even if i was to pass ems and have no problems if checked i would face a fine and what not. Furthermore, when deleting the two rear cats does the computer need any adjusting? Because all the exhaust gave me warning about that. I personally do not see that that would be needed?