Intake crank vent hose?

Zero dark

I hope i am saying the right part but on the intakes there is one on each tube that connects using a pcv hose.

What is the purpose of this hose and what happens if it were to disconnect while driving?

I ask because during install the driver side tube had to be twisted to fit. I may need longer piece.

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MD Art Pipes, MD Shockwave exhaust, AAM Intakes, Stillen Crank Pulley, Z1 25 Row Setrab, Whiteline Diff Bushings, 20mm H&R spacers, BC-BR Coils, GT-R push button, 3M, Tommy Kaira Knob, Takata Drift III, Custom Harness Bar, Zwork Headlights, EVO-R, Uprev