Quote Originally Posted by den525 View Post
To the OP... i think you just have to wait a day or 2 before the ECU get used to the new mapping... i got my stage 1 done today... and they said it takes a day or 2 to get it fully running. So i would presume that would be the case for the other way round.
I don't think it works that way. The tune should be working as soon as the car gets onto the road. It's not about wearing in or something in this case.