As you'll know i'm attmpting to sell the car. If I were to want to swap the Revo'd ECU out and replace it with the original one, is ti just a straight swap in & out, or do I need to have anything done as far as VAG-COM? And would the re-mapped ECU keep it's settings? I'm not 100% sure how they re-write the software and whether it is permanent once powered down etc? Cheers lads.