I have a leak on my PTGT.
I talked to a friend who told me that the SRT4 guys called that a "Factory Boost Leak" and to cap it.
After capping it I got a check engine light with the code P1188 (The Engine Control Module (ECM) has detected a significant difference between the Throttle Inlet Pressure (TIP) sensor signal and the BARO sensor signal.) I pulled over and did some research on the code and found a vacuum line diagram that told me that line went to the TIP sensor. As soon as I got home I took the cap off and am currently resetting the check engine light to see if that fixes it.
I went to the local auto parts store and asked for a new rubber cap and was informed that part couldn't be found there and had to be purchased from a dealership. I find this very hard to believe, but I don't know what that piece is called to do any more research.
Replace your old parts or the broken ones with the new ones for the prices you can find on an Autozone Specials sale.
Any ideas?