What are the two nozzles of Buick Hyatt accelerator?

The two nozzles of Buick Hyatt accelerator are connected by water pipes.

1 and the nozzle on the accelerator of' 06 Buick Hyatt is exhaust gas backflow, which makes' 06 Buick Hyatt meet certain emission standards.

2. The other nozzle of Buick Hyatt throttle is used to heat the throttle body. Buick Excelle refers to Excelle. Its prototype is a global mid-size car newly developed by General Motors, which was designed and developed by General Motors daewoo motor Technology Company.