That’s hilarious I just swapped the exact same plugs this morning in my Lotus, cheapies for iridium, what a difference.
Pros: big difference
Cons: cheapies
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
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The new NGK spark plugs do not need anti-seize per NGK. The anti-seize is already in the metal.
Pros: anti-seize already included
So the BKR7EIXs are in and gapped to .028. Man what a difference. Everything is so much smoother and the engine doesn't feel strung out anymore.
Pros: smoother, engine doesn't feel strung out
Cons: still getting misfires
Vehicle:
Volkswagen
Replace the spark plug with a genuine NGK plug.
Pros: genuine plug
I always get the oem brand because that works the best for your car. I get NKGs for my vw beetle
Pros: works best for car
Vehicle:
Volkswagen Beetle
Iridium, tried and proven. Ruthenium looks like is an experiment by Ngk, I would give ti some time before these plugs prove themselves reliable before buying.
Pros: tried and proven
Cons: Ruthenium is an experiment
Another plug to give a try if you want to stay stock heat range - NGK's Ruthenium plugs LFER7BHX . Call it a placebo effect but after install cold start idle sure felt smoother and after 4000 miles they're running as good today as day one, gas mileage has been pretty good as well around 31 mpg +-1mpg @ 75mph. No cold start misfires. Overall a pretty solid plug for this engine and it's reasonably priced.
Pros: smooth cold start idle, good gas mileage
Vehicle:
Volkswagen
Mileage: 4000 km
Part number: LFER7BHX
Brisks are throwaways that need regular attention by either regapping them every few thousand miles or replacing. You can run NGK 7437-9s for 20k in a stage 2 car without touching them. There's a big price difference so you get what you pay for.
Pros: run 20k without touching
Cons: need regular attention
I'm running PFR7Bs. I get a misfire or 3 here and there, only during low load low speed acceleration. I've got R8 coils too. Not sure if the RFD makes them occur any more frequently than they otherwise would, but I'm not worried about it.
Cons: occasional low speed misfire
Vehicle:
Volkswagen Golf
Part number: PFR7B
I've been running these plugs for over a year and a half and hate em, I guess when I got them I wanted new fresh plugs for a hot climate but should have taken them out immediately as there was noticeable power loss. I'm looking to go back to stock now as the car really ran much better. This is an unmodded 08 gti.
Cons: noticeable power loss, hate them
Vehicle:
Volkswagen Golf
Part number: BKR7EIX
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