I don't think they'd redline in D mode, DS or manual mode yes so in my understanding this re-programming is to re-arrange the torque band and ensure there's no torque close to or around redline or 5k plus rpms. I should have more information tomorrow.
2011 335D Alpine White/Chestnut Brown, M-Sport, Premium, NAV..SOLD
2012 VW Golf TDI Black/Black, Highline, DSG, Nav..His
2012 VW Golf Wagon TDI 6spd White/Black, Highline, Pan Roof, Nav..Hers