Lingenfelter L250090309 Lingenfelter C6 ZR1 Corvette Supercharger Pulley 2009-12 v1.2 - Manual (Page 14)

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42. Remove the PCV dirty air hose line from
the passenger side of the supercharger.
43. Remove gas cap from gas tank.
41. Inspect the supercharger insulator seals.
Replace if damaged [GM part # 12609472].
44. Bleed the fuel system pressure to 0 psi at
the service test port on the driver side fuel rail.