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Bosch Platnum +4's
Early this summer I changed my plugs over to +4's and did my wires at the same time. Now I know that a lot of people don't like these bosch plugs and say to run NGK's. Lately I have noticed that some times my car will idle kinda rough and the RPMs will fluctuate a little below normal, anybody think it's the plugs causing it?
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1994 3.4L Chevrolet Camaro - No more
2006 Hyundai Sonata
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