HELP! Whistling Noise and Running Rough after Valve Cover Gaskets 2007 3.0SI X5

[Txchoicemotors]

Please help me out...

Ive searched and searched and ive gotten nowhere

I replaced the valve cover gaskets on my 2007 X5 3.0si . They were leaking badly causing a very slight misfire due to oil in the plug wells.

When i put it back together CLEARLY something was wrong...

It started fine, after it warmed up there was a very loud whistling noise acompanied by three codes and rough idle followed by stalling and dying

2a99
2a98
2a87

I opened everything back up..

Noted there was a small bean shape plastic part that did break off the valve cover and i used gorilla glue (Suposedly heat resistant) to glue it back to the cover.. If anybody suspects this is my problem please stop me now because i'll go order a new valve cover asap...

I've double tripple checked the gaskets, they are fine.

Cleaned and swapped the vanos solenoids

replaced the ecentric shaft seal (Noted there was a very minor amount of oil in the sensor but that was caused by removal and install, I cleaned it out and reassembled

Replaced the valvetronic seal

Unhooked battery for 30 minutes, Plugged back up and Inserted key for 1 minute before starting to reset the valvetronic

PCV valve is connected...

Upon cold start the engine runs fine! No Problem at all

After 5 minutes of run time the idle goes really rough and it stalls


Help please! I'm loosing it!