I did the same as Ivan. S2R 1000 (not sure if it matters for a S4RS).
Just after my 6000 mile checkup, and it's going in for the 12,000 mile check up this Thursday.
Couple of other S2R riders told me to leave the udder on. Won't mess with the ECU or remapping. Said something about after so many (like 50 or 60) the bike will reset itself anyway (running lean or rich).
It's loud - like bubbly loud at idle- but I love it. The raw power sound reminds me of a late 60's muscle car.
Harley riders crane their neck to see what's coming down the road
. It's a v-twin for sure!!!