A lot of threads discuss wether the upgrade to existing Non-L P90D to P90DL is all software or involves changing the contactors (1300A>1500A) Forum Evidence of Software - tesla service who have done this at service centers for their demos cars - photos the same battery packs Evidence of Hardware - common sense? iconel is expensive. now that tesla offers the upgrade on the store Tesla — Ludicrous Mode P90D DO WE KNOW FOR SURE WHICH ONE IT IS? the exact wording of the product description DOES NOT discuss hardware changes. Tesla PN: 1074943-00-A Price shown is for the upgrade only and excludes labor. Tax will be charged at the time of purchase. Global pricing may vary. Upgrade the level of performance in your existing P90D from “INSANE” to “LUDICROUS”! This upgrade will decrease 0-60 mph time by 10% to 2.8 seconds with a quarter mile time of 10.9 seconds. The time to 155 mph is now 20% faster than a standard Model S Performance. The LUDICROUS mode upgrade is available for all P90D vehicles. These vehicles will receive updated badging to P90D where the underline denotes the LUDICROUS upgrade. Cost of installation labor is not included in price, please contact your nearest Service Center to confirm the labor rate and availability. North America market only. For additional questions related to the retrofit, please contact OnlineOrders@teslamotors.com. Details for the Europe market, please contact: Accessories-EU@teslamotors.com For all other regions, please contact your nearest Service Center.