I ran those plugs with zero issues for many years on my stage 2+ car gapped at .028.
Pros: zero issues, many years
Vehicle:
Audi A3
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PFR6Q was equivalent to the stock Bosch plugs. They work fine.
Pros: work fine
Vehicle:
Volkswagen Passat B6
Part number: PFR6Q
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
I used the NGK plugs once and kept getting a pretty bad hiccup under hard acceleration.
Cons: hiccup under acceleration
I used NGK BKR5E-7938 they are awesome plugs, i only paid $14 for mine but i have a friend who pays cost. they are around $80.
Pros: awesome plugs
Part number: BKR5E-7938
My car started experiencing misfires after changing the sparkplugs. Never happened before. Now it gives me a code for random misfires and #4 in particular. Today is the second tome it happened after starting the car on a cold morning. Second time 2 weeks after changing spark plugs. Just after I start, when its still cold, and never during driving or idling when warmed up. Strange. Could it be the plugs. I am using the new NGK ones. NGK Part # 1675 Laser Platinum pre gapped. Didnt have a problem with this before. I think these a are one range colder than the previous ones I had in the car. Could that be the problem?
Cons: misfires after changing, cold start misfires
Part number: 1675
I used to run NGK tr55's in my mach1 but for some odd reason they had a tendency to become loose I thought it was my heads but I switched to a brisk plug over 30k ago and haven't looked back I will be buying them for all my cars.
Pros: switched to brisk plug
Cons: tendency to become loose
Vehicle:
Ford Mustang
Mileage: 30000 km
installed new plugs and R8 coils today no misfires anymore. this car is f'ing FAST now!
Pros: no misfires anymore, car FAST
Part number: 06E 905 115E
I have tested the BCPR7EIX which did not make any difference to my car. I felt that the standard plugs worked well vs these.
Cons: did not make any difference
Vehicle:
Volkswagen Golf
Part number: BCPR7EIX
just did my coil packs and plugs. Used E version Hitachi Made in Japan coils. to my surprise the NGK Laser Cut Platinum plugs PFR6Q came gapped at .028, I was expecting them to be set at .032 from the factory, so it was a simple replacement. No more misfires over 20 psi
Pros: no more misfires
Part number: PFR6Q
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