u/Key-Tie4616

Quick question as I can't seem to find an answer.

On a cold start for a 992.1 Carrera:

1. Is it bad to cold start in sport mode with the PSE on? Is it better to let the engine warm up before kicking in sport mode?

2. If yes to 1), is it ok to start with PSE on?

3. I've heard even if you turn on PSE/Sport Mode on a cold start, the valves don't open until the engine gets warm. Is this true even if I get something like M-engineering's PSE valve mod, they won't fully open until the engine is warm?