Don't want to hijack - but what about wheel dynos like a dynojet vs dyno dynamics? It always seems the mustang and dynamics dynos are stingy compared to the dynojet? Calibration or just the nature of the beast on roller dynos?

Attached are 2 dyno runs with my E55 AMG (Diamler days - so kind of Mopar..lol). Both runs were the same day one dyno dynamics (new computer tune) and a few hours later on a dynojet so the conditions were almost idental. 53hp difference but the Torque was almost the same 542 vs 535???