Quote Originally Posted by Sinister Performance View Post
Don't forget to uncheck the "SES Enable" box on all CAT and Rear O2 diagnostic codes you set to "No MIL". If you don't do this, and you have a Driver Message Center, it may light up with a "service vehicle soon" message.
Not sure what tuner you're using, but the DHP PT does it differently. I can set the codes to enable or disabled, and if enabled I can set what type (MIL or no MIL) and how many trips to set the code and how many trips to make it go away.