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.
Did this last night without any issues. The coils were in there tight but a warm engine and some tough talking got them out. I went with NGK Iridiums and the car seems to drive smoother - other than that, all is good at 60K.
Ngk Platinum all day
same everything but using a C2 Motorsport Stage 1+ tune. rippin!!
I run a cooler NGK plug in my boost increased and tuned ZR1 making 730 horsepower. They have been flawless and lead the market in the LS world also.
I'm running PFR7Bs. I get a misfire or 3 here and there, only during low load low speed acceleration. I've got R8 coils too. Not sure if the RFD makes them occur any more frequently than they otherwise would, but I'm not worried about it.
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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