can anyone help with these dtc's i've been getting.
Saturday, 25 June 2005, 19:15:40

VAG-COM Version: Release 504.1-UD
Control Module Part Number: 8D0 906 266 B
Component and/or Version: 2,8l V6/2V MPI OBD2 D02
Software Coding: 01201
Work Shop Code: WSC 06325
3 Faults Found:
16686 - Cylinder 2: Misfire Detected
P0302 - 93-00 - Unknown Error Elaboration
16687 - Cylinder 3: Misfire Detected
P0303 - 95-00 - Unknown Error Elaboration
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 95-00 - Unknown Error Elaboration

I recently had new performance camshafts and TB installed on my 97 a4 2.8q 12v with timing belt maintenance, now the car has a horrible idle and i keep getting these dtc's. i replaced all plugs and checked the wires not the problem. any suggestions?