Review
Mileage is better, idling is smooth for pretty much the 1st time in years, and acceleration happens much faster and it's more uniform. My exhaust smells cleaner too.

Review
It managed to last for about 15 months before it finally died, which is damn impressive considering I race on the track almost every weekend. The acceleration is immediate, powerful and smooth, while the idling is quiet and smoother than silk. Also, this plug cut my fuel consumption by a noticeable margin. Definitely a must have in any car!

Review
Replaced the original sparks on my BMW with these on the recommendation of my friends who said that it would improve my mileage and throttle response and idling. My bros were right, the sparks improved my mileage slightly and the throttle response was faster. Also, my engine idle was very smooth. It's been in my car for over 1 year now and they still work perfectly

Review
I installed this spark plug last year when I went for servicing and it's still very good! My car accelerates instantly when I press the accelerator now (last time got lag) and my engine idle is smoother also.

Overall my car is performing better than last time b4 changing plugs.

What I like
My car engine is much smoother now, no more lag