Here's the plots. Was careful at low rpm's and didn't start full fuel until just above 2k on the rpm's. Kind of neat how around the same rpm point that the IAT's in the plots above start to diverge (injection starts), so too the HP diverges. Not a substantially higher amount of HP at these settings, but a lot more area under the curve.
From the looks of the recorded data at these hot conditions, and the safe readings on the EGT's, DPF pressures, etc. it looks like there's more room. . .
2011 335d Sport Package/Cold Weather Package
2004 Ram Cummins with lots-o-mods