From the BMW i3 Worldwide FB group: "The onboard DC-DC converter is rated for 2500W". Sounds like a 2400W peak amp would need to be supplemented in some way.
For my recent amp install, I pulled directly off the rear electric motor DC-DC converter. Proximity to the back seat made it super easy to run power+ground. I used two of the top bolt holes to the run 8-10 AWG through and then under the carpet and around/down under the back seat. I've seen...
Anybody else seen 5 Spurs iSeal for the frunk?
https://5spurs.com/store/usa/2013-to-2020-BMW-i3-iSeal-p153100422
I took the survey. Sounds like the company hopes to release it in the next 1-2 months.