I have a few scenarios here...I just took off my RA snorkel
cover 2 days ago and the car feels so much more responsive and powerful (more air coming in now), XC also removed his cover and he told me using paddle shift at 1st gear the car "launched like rocket"
On FC side,
before remap with cover on I get about 270KM at half tank
After remap with cover on I get about 230KM at half tank
So now, after remap with cover taken OFF, I need to monitor this now..

maybe this will help?
I can't really feedback the 2-3k rpm range because I am confused by the few changes I did to the car, the best I can do is monitor FC for now, for the performance I am getting now I am quite satisfied already
I think you must find XC to discuss this 2-3k rpm range
seems like only XC having issue with his 2-3k range...
and ur leg is surely heavy ..