You'll notice smoother idling, low RPM acceleration improvement and a boost in power at all speeds when you toss the original plugs and replace them with our performance Datsun 610 spark plugs in your classic compact car. The reason is that these 610 performance spark plug sets kick out an amazing 1,000,000 watts of power, versus a poor 50 watts from standard plugs.
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If you need further convincing, read the 610 spark plug reviews written by past buyers of the product to see an overwhelmingly affirmative response. Bottom line-you get improved fuel economy with Datsun 610 racing spark plugs.