I have a 2006 330i with 23,100 miles on the clock. The car developed the noise and it was very loud. After I realized that I have extended the wrong warranty maintenance instead of service I immediately bought a third party one. I took it to BMW on San Antonio and it was diagnosed that the cylinder head needed replacement. We went with the warranty I bought and it was denied because there was no breakdown. Then after reading many BMW boards I saw that many people were given goodwill gestures by BMW for the head replacement. Noting my car has 23k miles on the clock I went ahead and requested it. BMWNA denied as well because it was out of warranty and problem could not be replicated well the car was torn down so I know they could not replicated the problem. BMWNA indicated that their decision was final is there anything else I could do???? Has anyone encountered this before? Thanks for any help.