The word "remap" means to redefine or reorganize something, such as changing the function or layout of a computer keyboard or mapping out a new route for navigation. Full definition
Upgraded power kit consist of remapped ECU and 12 kg lighter titanium exhaust system. (ps-garage.com)
Our love for sports hatchbacks notwithstanding, Superchips» ECU remapping of the RenaultSport Megane 250's engine is something that we definitely took notice of. (topspeed.com)
You can't remap buttons — get ready for lots of accidental crouching when you're trying to run — but you can at least switch the jump button from X to B, which is way better placement. (kotaku.com)