I purchased the MSD coil upgrade kit, swapped out the coil pack, new spark plugs / wires, fresh oil / filter. Fired her up and she purred like a kitten.
You can also spring for the MSD coil, about twice as much but the boots are attached better I think, where the OEM part might have the boots rip off or the springs get caught up.
I replaced the coil with a MSD high performance which was actually cheaper than any other brand, and had significantly better boots on it to keep the water problem from happening again. Haven’t had an issue in 2 years.
There is one benefit to running R8 coils on a stock TSI. They seem to be a hell of a lot more reliable.
So, I went to my VW/Audi dealers here in Tampa and purchased the stock RS7 spark plugs and RS3 ignition coils. The exhaust smelled slightly worse at startup after the change, but still went away shortly after startup. The idle was smoother but I attribute that to old stock coils and spark plugs.
The only thing I have are the R8 coils, other than that stock everything. The car drives mint
I got MSD Street Fire coils to replace mine and its been 4 months so far and they're running strong.
So I replaced the coils with MSD packs, and tossed in fresh plugs, even though the old ones were less than 10k miles in. This seemed to fix the issue for a while, but it ended up coming back.
I ran a Blaster 2 on my old car for a bit. Idle was a little smoother, but it was probably because the coil on it was crap. No real performance gains expected.
Don't bother with the R8 coils that everyone says is an upgrade. It isn't. They are just red.
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