Quote: ...That must be why the carburetor manufactures put those chokes there in the first place?
True to an extent....
But Depending on cam, a choke can be totally unnecessary.
My car will start no matter how cold,(although I won't start it if it's older than -15C ) and idle within 1 minute of starting. Has never had a carb with a choke on it. The mix is bang on. Proven on a dyno, and at the track.
Maybe that's why performance carbs don't come with chokes in the first place?