i recently was communicating with someone who went all out on his s3. stage 2. he is now trading in his car for a bmw. when i asked why, he did give his honest opinion on a stage 2 s3 2015. its pretty much what i assumed it would be. he said it wasnt all perfect as most owners with a stage xx have posted up stated. i cant imagine all the modified cars work like a charm. so summing his story on his experience to the basics, the car basically would be on or off. it would kind of work and then not work. as a tuner i can see what he meant and unless he was a tuner who have experienced multiple cars then there would be no way he would have noticed. with all the little bits of changes he felt, i would say he is very in tuned with his car to have notice it. most drivers never notice it. when we modify an ecu its kind of an overlay over the old map setting thats already on there. so when it skips a beat it has to revert to a base map which will make what he is describing an on or off sensation.
oh dont get me wrong, i too want to get at least my dsg tune in with all these guys saying how good it works. but in the back of my mind i know something is going to go wrong. i would love to get rid of the horrible shifting points and have the gear selector show on the dash. im super hesitant tho.