I run usually one of 2 brands. Brisk or NGK both iridium. And both are 1 step colder than stock.
Pros: iridium, colder than stock
Cons: negative ignition corrections
Mileage: 10000 km
Reviews of NGK parts For Business
Average Rating
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The manufacturer's average rating is calculated based on ratings of all its spare parts. It determines the place in the manufacturer ranking
3.8
Manufacturer Ranking
#103
790
Spare Parts
2
Country
Japan
Website
ngk.de
Spare Parts
Comparisons
Last time I went Bremi coils and NGK Laser Platinum plugs.
Installed the NGK rs7 plugs and it runs fine. I kept them at factory gap, which was, if I remember correctly approximately .028.
Pros: runs fine
I just hit 40k miles and went with the NGK (RS7) plug gapped to .024, and the RS3 coil pack upgrade. The initial results after install was underwhelming. Car ran a tad smoother, but that's it. Since the benefit of the RS3 packs were to provide a more intense spark, I tried a wider gap ~.028-.030 Man it woke things up! Revs "effortlessly" and pulls hard from top to bottom.
Pros: revs effortlessly, pulls hard
Cons: underwhelming initial results
Mileage: 40000 km
Bottom line: you can't go wrong with NGK. Can't really go wrong with OEM Bosch either but I'd just stick with NGK and make sure you gap them right, call it a day. I'd avoid Denso.
Pros: can't go wrong
Cons: avoid Denso
Vehicle:
Volkswagen Passat B6
Change the spark plugs too while you are at it, with NGK BKR6EIX plugs (or BKR6E if you want to save money but these are the copper plugs and will not last as long as the iridium BKR6EIX).
Pros: save money
Cons: less durable
Vehicle:
Volkswagen Passat B6
Part number: BKR6EIX
changed out some spark plugs, shop here: http://autotech.com/passat/b6-3-6l-2006-2009/3-6l-vr6-ngk-spark-plug.html also I decided to get a new valve cover (comes with new gasket, bolts, bolt o-rings, and of course a new PCV oil separator that are prone to fail)
Vehicle:
Volkswagen Passat B6
I used NGK Iridium.
Vehicle:
Volkswagen
I have replaced the four spark plugs with properly gapped VW (NGK) plugs and still the #2 misfires cold and randomly thereafter. The original ones looked quite normal actually - chocolaty brown. Very little wear and a .032" gap.
Pros: normal appearance, little wear
Cons: misfires cold, misfires randomly
Vehicle:
Volkswagen Tiguan
I used the NGK plugs once and kept getting a pretty bad hiccup under hard acceleration.
Cons: hiccup under acceleration
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