I find the defenses for Tesla like this, which have no basis in reality, pretty amusing. A dyno certainly
can accurately measure the power output of an EV.
I've personally done it successfully with my own cars. I can't believe the 691 HP issue still hasn't been resolved, personally. By definition 691 HP = 515486 watts. Even the
P100D barely produces this much power at the battery at a full charge and heated pack... let alone a non-ludicrous P85D (~400kW or so at best)... and that's before it even gets to the motor, not counting any losses elsewhere.
Non-sequitur for this thread, though.
Some facts about the battery packs: The 75 packs use 14 modules of the type of cells found in the 90 packs, which had 16 modules. The 85 packs, which are no longer produced by Tesla by the way, had 16 modules with lower capacity cells. So, to say Tesla is putting 85 packs into 75s and software limiting them is kind of silly... admittedly, I've been catching up on my Tesla news and rumors lately, but I've seen no evidence for this whatsoever, especially considering Tesla doesn't even produce the 85 packs anymore nor use the cells that were used in it for anything at all at this point. Anyone have a photo of a car with a 75 rear badge and an 85 pack label on a car from the factory? Preferably an uncut video that shows both in the same clip.
As for the increased power... I don't know what Tesla has done to up the power, honestly. Things I do know, however: The 75 packs are capable of ~1400A output. The small drive unit's I've tested are capable of some pretty high peak currents, beyond 750A. So, I know without any doubt, that Tesla
could, with software alone, up the power of the 75D cars
significantly... like, probably to the point of being as fast as the original P85D. Should easily be able to get ~500+ HP out of a 75D with no hardware mods whatsoever (with a full, warm pack).
Obviously, Tesla has little incentive to do this, and will likely continue to nerf the lower end models' performance so that people opt for the higher profit margin models.