Hi everyone! My shop fitted a different ignition coil (P/N 811 905 115 - used in many other Audi's but not the urquattro) and I'm wondering what's so damned special about the urq's coil P/N 035 905 105 A? Is it safe to continue using this coil? Could it mess up things? Could it explode etc. ;-) Thanks. Regards, Maurits 1986 quattro GV