After a few hours o cleaning and taking things apart, I came across the following: All in all, 3 weeks after getting everything cleaned up and the plugs, air filter, and oil changed, the car is back to making 34mph on the highway at 80, and before it was 27mpg at best.
Don't bother with platinums. Just change out BKR6e plugs every 3-6k and you'll be good. They are dirt cheap and run the best.
Also, the best plugs for the car are NGK BKR7E's gapped at .032\" for unchipped and .028\" for chipped. They don't last as long since they're copper but at $2.39 a plug it's easy to afford to change them every other oil change. May not last the longest but they definitely run the best.
So I went with the ever popular BKR7E plugs gapped at .028\". I bought a spark plug gapper and verified the gap which is a good thing because the BKR7E's come pre-gapped at .033\".
i like the way it runs str8 out of the box b/c ngk says not to gap them
My old GLX didn't like anything but NGK coppers.
i have run the ngk v-power plugs the past couple of years with great results. part number r5671a-9
If you like Bosch plugs, use a 7 heat range. The stock 8 is fine for quick in-town trips at stock <10:1 compression. Older 8v's used 7 with the same combustion chamber and lower compression, with 0.032" gap stock. At 11:1 with a big cam and the same ignition mods, an NGK tech told me to run colder plugs (Bosch 6 equivalent, NGK 7) at 0.035" gap. He sent me a box of NGK race plugs, I gapped them, and my car ran sooooo much nicer. I was using Bosch W7DC and W7DTC (even worse) before.
I get a random misfire at idle, but nothing in boost surprisingly. Hey, I'm just goin with what works. And Im running 19 lbs on a T3/T4.
Me and another both ran BKR6E coppers for a week until the misfires threw a CEL. Logging the misfire counter, I was constantly getting misifres @ idle. I don't think copper is appropiate at all.
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