Originally Posted by Gugs
You cant leave the Jb4 on anything but map 0 if you plan on leaving it in for dealer visits due to the fact that the JB4 disables the obd port.
Yeah, I would set it to map 0, but I'm asking about physically leaving it installed so I don't have to mess with removal/reinstall each time I visit dealer.
Obviously if I have something related to turbos, DME, etc. when I bring it in I would remove JB4.