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My Car has a stock LS6 intake manifold, I’m installing LT headers and deleting the secondary AIR system but I’m running into an issue even after searching the threads.
I removed all the hoses and connections to the exhaust manifold. I also removed the solenoid and the vacuum lines but I can’t figure out what vacuum line needs to be connected to the vacuum port on the back of the intake manifold? Or does it just need to be plugged off? I also have a single vacuum line that comes from out of a wiring harness on the passenger side. Should this be connected to the vacuum port at the back of the intake manifold or should this vacuum line be removed also and plugged at its origin?
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Secondary AIR Injection System Delete 
