Spark plug NGK or OEM Mazda

I pulled my original plugs, and they were exactly the same as the replacement NGK. They're nice so far.

I installed the NGK PFR7S8EG laser double platinum. They came gapped at .032. Initially I installed them at .032 gap and just yesterday I closed the gap to .028. Car runs strong and idles smooth at both gaps.

I don't cheap out on the car so everything i put most by a name brand. New Parts; 37. NGK Spark Plugs

Replaced old plugs, DENSO W20EXR-U, with new NGK BPR6ES. Idles a lot more smoothly now.

I prefer NGK for both plugs and wires.

Just wanted to let you know i done the change and it was the easiest one i have ever done in my life! I went with the NGK Laser Platinum PZFR5Q-11 , but wanted to let you know just in case it could keep some out there from not checking the gap on these plugs prior to install. I thought they were supposed to come pre-gaped, but every one of them were set @ .040, instead of the manufacture recommended .044. Anyway, glad I checked, and thanks for the reply!

I use cheap-o copper NGK V-Power all copper plugs on my M Roadster that produce max power (according to a cohort of enthusiast whack-jobs who repeatedly dyno their cars to look for .0005% differences in power output), but need to be changed every year. No problems thus far.

I use NGK's, and they seem to do just fine.

new NGK R's (copper) runs better but not 100%

The NGK's listed have a colder heat range. Great in the summer, it will misfire like crazy in the winter