enough boost is when you have 3 dimple marks in the hood from the valve cover nuts..
If you dont like it move on, If you have a item that is NLA or you dont want a piece of china( meyle ) mfg rubber assy please let me know?
Iam presently doing over fifty new production aircraft parts per monthnext will be MKII snorkel's
...BTW your Bieber avatar is awesome.-Malone