Yep, they will do a software update, meaning you will lose your map, and also have your DPF warning lights etc come on as I assume you would have had this mapped out on your removal.
So yes, they probably will, but be prepared to take your car back to who mapped it.[/QUOTE
this isnt true, i had the iinjector recall done and ive got custom map and miltek dpf delete and didnt effect them doing it FOC and my car is still mapped