This is why I am skeptical of all values not derived from a dynojet, ideally with SAE correction (or STD for FI'd cars).
You can't control the weather (and no correction factor is perfect), you can't control every transient trim on the ECU, and you can't perfectly control tire slip, but you CAN control the known weight of a drum and then calculate power and torque based on how quickly you can turn it.
Unless a shop gets creative with where they take their ambient temp measurements (and some do...), values across dynojet units are VERY comparable.
Too many other adjustable variables come into play with other (e.g., load holding) dynamometers , so very, very difficult to make comparisons, sometimes even on the same car.
In any case, the final numbers sound similar to dynojet derived values with similar mods, so congrats
