Thanks. Interesting that it's an 980 motor in the SR+. I just checked a few EU registrations of SR+ (as they have also recently arrived here) and they are listed at the same max. power transfer as LR RWD in the offical EU papers. Interesting because the SR+ has a 0-60 of 5.6s and the LR RWD is at 4.9s (before 5% updgrade). From the dyno tests of SR+ it peak outputs 272 hp(I) - or 276hp(M) / 203kW.
Added various dyno results below (from some youtube videos - just for fun, they might be a bit unprecise and not official).
SR+ (registered after 5% upgrade in March) - 980.
Total/rear at 225kW / 306 hp(M) / 302 hp(I)
Tested at: 203kW / 276hp(M) / 272 hp(I) -
90%
LR-RWD (registered after 5% upgrade in March) - 980.
Total/rear at 225kW / 306 hp(M) / 302 hp(I)
Tested at: 242kW / 330 hp(M) / 325hp(I) -
108%
LR-AWD (registered before 5% upgrade in March) - Mix of 980/990
Front at 150kW / 204 hp(M) / 201 hp(I)
Rear at 190kW / 258 hp(M) / 255 hp(I)
Total: 340kW / 462 hp(M) / 456 hp(I)
Tested at: 274kW / 372 hp(M) / 367hp(I) -
80%
LR-AWD (registered after 5% upgrade in March) - All 990
Front at 155kW / 211 hp(M) / 208 hp(I)
Rear at 195kW / 265 hp(M) / 262 hp(I)
Total: 350kW / 476 hp(M) / 469 hp(I)
LR-P (registered before 5% upgrade in March) - All 980
Front at 150kW / 204 hp(M) / 201 hp(I)
Rear at 205kW / 279 hp(M) / 275 hp(I)
Total: 355kW / 483 hp(M) / 476 hp(I)
Tested at: 346kW / 470 hp(M) / 464hp(I) -
98%
LR-P (registered after 5% upgrade in March) and P3D- (first EU deliveries in August 2019) - All 980
Front at 155kW / 211 hp(M) / 208 hp(I)
Rear at 205kW / 279 hp(M) / 275 hp(I)
Total: 360kW / 489 hp(M) / 283 hp(I)
If those dyno results are correct then the 980 (based on numbers from LR-RWD) has a lot more to offer than currently in LR-P (reaching around 530hp in the Performance).
Also interesting that it's not a 990 in SR+ as it's close (if we assume the 990 is a "low current" version).
Speculation: Based on the numbers it almost seems like the 990 can do exactly what the 980 performance currently can (at least on the registration papers), but the performance can go to ~530hp if looking at the RWD (ludacris anyone?).
Maybe the LR-RWD tests are wrong...