Initially ludicrous mode was not just a software update.
You could get it on your (already delivered) MS P90D, but had to bring it into service. They changed a fuse and activated ludicrous mode in software.
Of course, today all Tesla P100D get built with that fuse already in place - so it's "just a software upgrade" today.
There's quite a bit of electrical magic going on for a fuse to be able to handle insane current bursts while retaining a good response time in case of a catastrophic fault.
Of course, today all Tesla P100D get built with that fuse already in place - so it's "just a software upgrade" today.
There's quite a bit of electrical magic going on for a fuse to be able to handle insane current bursts while retaining a good response time in case of a catastrophic fault.