question on e36 vanos and knock sensors

[grindin8o8]

I have a 98 323is and had 2 fault codes P1519 and P1423 and 2 pending codes P0330 and P0325.

I know that it has to do with vanos, secondary air pump and knock sensors. what should I do? really need help here. I replaced the vanos solenoid and a vacuum hose that I believed caused the P1423 code and the cel was gone for about 5 days and it came back. the knock sensor codes came on just recently. help please???