Re: the puffs of smoke, it could be a number of benign things, to be honest. Oil overfills are most commonly the cause of initial puffs of smoke, which would explain why they happen early in a session.
And this overfill situation could also be related to packaging, which is why it's also seen on the customer cars.
On a side note, Toto Wolff responding to Mattia's comments about the TDs impacting all teams:
- “Another complete bullshit story, technical directives.
“There’s a clear regulation on power units, there have been clarifications in Austin what you are allowed to do or not which were important.
“But nothing that was in any way surprising because if you comply to the regulations that was clear anyway.”
He goes on:
https://the-race.com/formula-1/wolff-ex ... nic-gains/
- "“I think the irony of the story is that we were pushed by some of our competitors to absolutely new levels,” said Wolff.
“It brought us to almost burnout last year to develop and innovate in a way to be competitive on track.
“And here we go. I think we made a substantial jump in performance from 2019 to 2020 because we needed to last year and that is a little bit ironic for me.”