I pulled my Carter and most vacuum tubes and vacuum solenoids preparing for the Weber install. My engine is apparently from California and according to the vacuum routing chart it has a Decelerator valve. The vacuum hoses that route to the decel valve also eventually operate my shift on the fly 4wheel drive.

Question 1: Can I remove the decelerator valve and attached tubing and run direct manifold vac to the shift on the fly?

Question 2: What is the function of the decelerator valve and is it necessary to leave it installed?