I have an extra set of OEM Audi R8 coils for sale. The manufacturer is Eldor. Part number is 06E905115F. They were used for approximately 100 miles before removal. Ecstuning price is $21.29 each. I was attempting to diagnose an issue that turned out not to be a coil issue. In order for N54/N55 usage you will need a Bimmerlife or equivalent harness. The lower heat shields have been removed in order to be fully installed in a n54 so unfortunately I can't return them. My loss is your gain. I would take 80.00+ shipping and fees.