I too run these on my stage 2 1.8t gapped at .028 and replace them every 10K miles. So far so good.
Pros: so far so good
Part number: BKR7E
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I've run BKR7Es for years with zero issues. I've tried other plugs and I always go back.
Pros: zero issues, always go back
Vehicle:
Volkswagen
Part number: BKR7E
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.
Pros: Iridium, 1-step colder
Cons: engine cares a lot
Vehicle:
Volkswagen
Mileage: 6000 km
Part number: BKR7EIX
Ours has been pretty reliable, had some issues with odd stalling once which was cured with new plugs/wires/carbon cleaning, rear shocks just went recently.
Pros: cured stalling issues
Cons: rear shocks went recently
Vehicle:
Mazda 5
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.
Pros: smoother idle, consistent power delivery, no misfire
Vehicle:
Audi A3
Mileage: 75871 km
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.
Pros: car drives smoother
Mileage: 96560 km
If its just painted like some cheap plugs such as some autolites then yes its needed.
Pros: needed for painted plugs
Cons: not needed if coated
Just swapped out some pretty old looking OEM bosch plugs that were gapped at .045 for some reason. Put in PFR6Q at .032\". Didnt notice much of a change.
Cons: no noticeable change
Vehicle:
Volkswagen Passat B6
Part number: PFR6Q
When we got our 535xi one of the first things I did was visit the local parts place to buy new spark plugs for the N54. After driving the car a while and visiting many BMW discussion boards I learned most folks have a very low opinion of them
Cons: low opinion
Vehicle:
BMW
Just install my today, is it just me being paranoid or else? the engine noise sounds louder and it's very noticeable. Has anyone felt the same way? by changing out for these spark plugs, does it make any advantage performance wise? btw i am pretty sure the installation was good and not misfire or anything likes that. just more engine noise and not a good noise.
Cons: louder engine noise, not good noise
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