So I bought an 02 GT that needs some work.
The PO installed a BBK intake plenum with throttle body and a K&N CAI.
If I turn the car on it will turn over and idle pretty normally.
But there is a hissing vacuum line noise from the engine bay which I determined its behind the intake plenum and there is a hose missing.
If I cover that opening, the car will stall and die.
I noticed some cut hoses near the passenger side firewall and upon removing the passenger splash guard I discovered the evap...

Help me unravel this mess...