Your bike needs the 621 strategy update.
in the "S" models, HD forgot to switch the ACR's to on believe it or not. Even toggling them in SERT/Powervision etc does nothing.
When the update is done, you will hear a audible "click" when the ACR is engaged.
There really should be a recall on this, HD Usa has done one but nothing here.
Once the update is done, the bike will start like it's on a jumper pack.
I did mine via Powervision. Dynojet or Fuel moto can convert your current tune to 621 spec.
As for SERT. Last time I checked 621 wasn't out for "stage 1" but there was a "stock" map floating around. You could in theory pick up the 621 tune and copy your VE/timing and everything else to the new map.
They know about the issue, it takes 30 seconds to flash the update.
But, when I last checked the SERT 621 update was for stock bikes (not stage 1)