sfphoto

Have been getting error codes 301, 302 etc

Rough when starting cold, then smooth once warm, drives great incl. hard

Have cleaned terminals w/ contact cleaner and re-set codes

Sever months later same CEL and codes

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Thought to replace coil packs, ones installed are marked 06h905115

Amazon has 06h905115-A and 06h905115-B

Can anyone here tell me if these 3 are the same or different?

Or should I get a newer version? Or none and look for another reason?

uberwgn

The coil packs have gone thru many revisions. I'd look at ECS Tuning and see what they're selling nowadays.

When were they last replaced? How old are the spark plugs?

sfphoto

Coil packs are original. 60k miles.2010 A3.
Plugs replaced at 50k (third time since new)