Help Needed!!! Audi S8 D2 2002
 

Hi everyone, just had 2 new cat's fitted today, exhuast shop tells me my downpipes are loose at the manifold causing a blow at the front of the car, may be just loose bolts or sheared, unknown as of yet!!! does anyone have any diagrams or procedures for getting at these bolts so can point my mechanic in the right direction???any info will be greatly received.......