i have 2021 GR 3.0 with JB4
i will be going to the dealership next week to do the oil/vacuum pump recall
should i unplug the jb4 or just leave it pluged on map 0?
thank you
Also - if you have a battery charger, make sure your battery is fully charged up before you take it in - there is a theory here that during the update the battery dies which causes the update to fail.