Reviews of NGK spark plug

I ran those plugs with zero issues for many years on my stage 2+ car gapped at .028.

PFR6Q was equivalent to the stock Bosch plugs. They work fine.

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.

I used the NGK plugs once and kept getting a pretty bad hiccup under hard 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.

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?

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.

installed new plugs and R8 coils today no misfires anymore. this car is f'ing FAST now!

I have tested the BCPR7EIX which did not make any difference to my car. I felt that the standard plugs worked well vs these.

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