Ignition coil Denso or APR

FWIW, I got an APR Stage 1+ tune on my '13 CC at about 30k miles. Blew one of the stock coils within a month. Replaced with red tops and new plugs and have been good since then (19k miles).

I found some coils made by denso 673-9303 (i.e. Toyota) on Amazon for around $18 each. They've been troublefree since I put them in about 1K miles ago. My original Audi coils had 81K miles on them. They greatly improved the low speed shift quality and idle smoothness after I put them in.

I replaced the old ignition coil with a Denso one. The car is running great after the replacement.

Make sure to spend a little extra and get the Denso brand coil. The cheap one don't last very long.

Short answer - it was the ignition coil. In the end - it serves as a reminder that just because a code (or lack of) seems to point to a specific component, you MUST diagnose. ECM costs $300 - $1000 including coding - a Denso ignition coil was just over $100.

Put in the new coil (Denso best available here off shelf)- and did quick hook up test for spark. NO SPARK at all.