Finally got a AE801 to swap in to replace a AE802, is this a plug in and go solution or do i need to disconnect the battery or anything else.

Plug and go

Ok thanks. Let's hope it is worth it. Just wondering if the dealer can actually tell if it has been swapped, my next service is due soon.

I've never bothered disconnecting the battery when removing mine, etc. The select monitor will indicate what ECU version you have fitted, but I doubt they'd take much notice to be honest with you. Unless anything goes wrong then they'll be looking for excuses. I change it and not worry about it mate.

Phill