996 911 Turbo Question Bi or Straight?

[nevetas]

Do the twin turbo's both kick in at the same time, or is it one first at small revs then the second turbo kicks in after?

[verysideways]

together (not sequential)

[nel]

Yep - as above, the turbos work in parallel. It was the 959 that used a system of sequential turbos (and of course other, more modern, Japanese machinery).