Remapping an exhaust. Well, what does that mean? No hardware is actually changed in your car. All the information about how your car runs, the fuel oxygen mix ratio, the emissions, etc are all stored on the ECU, an Engine Control Unit. it is this that allows the car to know how much fuel s left, how many miles have been done, etc. a remapping can look at your ECU and find out where your car can be optimised software wise and better increase the efficiency of your car. There is very little risk to your car as it is completely software-based. It is a process that can be reversed if you are unsatisfied with this result. This is an unlikely outcome as many of our customers are amazed at the improvement in performance.