I initially tried top of the range Bosch spark plugs for my car while servicing, and had misfire in 5th gear while on the freeway when my revs exceeded 3000 RPM. My mechanic couldn't figure out the issue as the car was idling normal etc. After reading some reviews in forums I decided to give these spark plugs a try, and have never looked back. No more misfire and car feels runs like new. The price is also reasonable for the quality you're getting.
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Unique design. Benefits will become evident over time as it is still too early to compare it with conventional spark plugs.
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all good 5 star
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