[speculation]Impossible to know but.....the front motors output the same about 147kW for the AWD and the Performance. So the front inverters are probably the same. It looks like the Performance rear motor output at about 211kW and the same for the LR RWD (about 188kW for the AWD). If so then the RWD and Performance have the same (rear) inverter. it then seems that the AWD has the same rear inverter as the RWD and Performance and is only software limited.[/speculation]
I gathered some more data from various official EU vehicle registrations (across several countries) and some interesting things do show up after looking more closely at the data (roughly looked at 10 registrations per Model 3 type per country, and they are 100% consistent). In the registration papers in EU you can see detailed info about each motor and its maximum power output.
LR-RWD (registered after 5% upgrade in March)
Rear at 225KW / 306 hp(M)
LR-AWD (registered before 5% upgrade in March)
Front at 150KW / 204 hp(M)
Rear at 190KW / 258 hp(M)
Total: 340KW / 462 hp(M)
LR-AWD (registered after 5% upgrade in March - which would probably all be 990 motors)
Front at 155KW / 211 hp(M)
Rear at 195KW / 265 hp(M)
Total: 350KW / 476 hp(M)
LR-P (registered before 5% upgrade in March)
Front at 150KW / 204 hp(M)
Rear at 205KW / 279 hp(M)
Total: 355KW / 483 hp(M)
LR-P (registered after 5% upgrade in March)
Front at 155KW / 211 hp(M)
Rear at 205KW / 279 hp(M)
Total: 360KW / 489 hp(M)
Please note we are using metric horsepower (1 hp(M) = 735.5W), not imperial/mechanical (1 hp(I) = 745.7W) as these are EU registrations. Couldn't find info on P3D-'s yet (need their EU license plate or VIN), so it's interesting to see if they match AWD or P in registered max. power output.
I was only able to find dyno results from pre-5% upgrade for the AWD and Performance and they seem to be at ~367HP for AWD and ~463HP for Performance.
I'm not sure how precisely the dyno results can be matched with the official max. power output information, but if the stock performance was measured at 463 hp(I) before the upgrade and this is the same as 470 hp(M) then with 5% added it would end up today at about 492 hp(M) which is pretty close to the 489 hp(M) that it's officially listed at maxing out at.
For the AWD it's a bit different. The dyno results at 367 hp(I) / 372 hp(M) before the 5% upgrade is far from the registered 462 hp(M). If we add 5% to that we get current 385 hp(I) / 390 hp(M). This more or less means there is a possibility for a 22%-24% increase (at least based on the listed max. power from the vehicle registrations).
It would also fit with the 20% software increase that was given in EU to a few AWD owners as compensation after Tesla messed up their orders. We are not talking P3D- update as the software still shows as LR, but performance wise it is close (~10-15hp difference between the two).
There would be no reason for Tesla to register the AWD's at 340/350KW if they are not meant to at some time reach those outputs as these numbers in the registration papers affect a lot of things (registration cost, tax, insurance - from a financial perspective you want those KW numbers to be as low as possible).
Also interesting is that the LR-RWD rear motor has 20KW more than the one in Performance (as they are both 980s).
It gives some possibilities for an update to both Performance (+20KW / ~5%) and AWD (+ ~63KW / ~20%) if they wanted to.
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