As for the BKR7E's. It's proven that .028 gap is what you want with a stage 1 or 2 setup, and 0.032 for stock. No need to experiment. I've used these plugs on both factory coils and my current setup (OEM Bosch B7 2.0T coils) with no issues.
i put another set of bkr7e's but with 0.80mm gap, the car is running a lot better now.
I installed the BKR7E gapped to .028 with no issues. My vehicles seem to favor NGK more than Denso.
Another BKR7E user. Never had any problems with them.
I too run these on my stage 2 1.8t gapped at .028 and replace them every 10K miles. So far so good.
I've run BKR7Es for years with zero issues. I've tried other plugs and I always go back.
Plus they are nice BKR7EIX's (NGK Iridium 1-Step Colder than OEM) and barely have 5000-6000 miles on them, and are gapped to the recommended 0.28 of the APR tune, so there shouldnt be issues, right? As it turns out, my engine cares, A LOT.
After I was done installing the new plugs and coils, I started the car and immediately noticed how much smoother the idle was. I then went for a drive and was really impressed by how much smoother and consistent the power delivery was overall, not to mention the graciously absent misfire under load.
I have replaced the four spark plugs with properly gapped VW (NGK) plugs and still the #2 misfires cold and randomly thereafter. The original ones looked quite normal actually - chocolaty brown. Very little wear and a .032" gap.
Plugs I use Platinum plugs on my tuned 1.8t .I tried using bk7re's 3 or 4 times and each time the car ran like crap. I gapped at 028,tried 030 .The engine made less power up top every time by a difference of 2/3 psi.
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