So my 2015 Model S P85D battery died this year and they replaced it under warranty with a 90Kwh. When I asked them about unlocking the larger battery they told me it would be $750 for 3-5% more range. I asked them if this would include upping the performance but they said no. When I asked about comparing a 2015 P90D with having a 3.0 for the 0-60mph and wouldn't paying the $750 essentially do the same thing I think I befuddled them. Anyone have any experience or insight? To me it is not worth the money for just the small range increase but is tempting if it increased my performance as well.