I am getting the cats removed this week and rack and pinion replaced. I will not have the jhm tune until I get the car home from the shop. I know I will have CEL from no cats but will it go into limp mode before i get home with no cats? If not I can find a way to upload the tune at the shop.
You’ll be fine. Depending on how far away you live you probably won’t even get the CEL activated before you get home. Not too long after you will but by then you should be able to flash the tune like you said.