It was the plugs all along. No wonder though, since they were extremely overdue for replacement. Checked the gap on every one i pulled out. They ranged from .037 to .048... so there must have been some severe blowby, hence the misfiring under boost.
I also suggest NGK spark plugs. And not necessarily the high-end Iridium ones. The 'lower' end ones are just as good.
I personally run 0.035" on BKR7E-IX plugs and the red 06E coils. Significant improvements to acceleration and responsiveness after the ECU adapted :thumbup:
When I got the car back from the shop I installed a wide-band O2 and changed the plugs to NGKBKR7e's (Copper) gapped to 0.028. I also re-greased the DV, since last time I had used generic grease general purpose grease, with high temp grease. The car feels a lot better now, and timing pull ranges from 3-8 under WOT. The AFR gauge shows anywhere from 12.5-13.0 under WOT, and bounces between 14.3-15.2 or so while cruising. I also believe that I hear the DV a bit more (have a cone intake), so maybe it was sticking?
Replaced mine at 40,000 with NKG Platnium and it runs better than ever. I wish I had a pic of the ones I removed. They were baddddd.
I got the plugs in just fine, and since this was the first time they had ever been changed, the originals were still there. Aside from having the Audi/ VW logos printed on the topside of the plugs' insulators, these are regular ol' NGK PZFR5D-11 plugs (stamped on the metal). The new ones I put in were pre-gapped at .040, and the old, worn ones were at .044 for the passenger-side plugs and at .043 for the driver-side plugs. I'm guessing that the elevated distance/numbers reflects natural wear and metal erosion over time.
i just replaced my plugs and wires from ecs not too long ago. right around mid june. i got NGK plugs and wires, plug type was the one u listed there, i have an AVH. the wires i got were numbered wrong just a heads up to anyone that buys them.
I prefer the NGK 8 or 9's, running them at 19 psi gapped at .018.
NGK BKR7EIX is a popular plug for 1.8T and 2.0T, but it is one step colder in the heat range. Fine for those whom don't see freezing and below temps.
I went out bought the NGK plugs and installed them moments ago. Reset the codes and started the engine. Within 1 minute I had the CEL and the P0351 - P0354 codes.
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