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Old 07-24-2008, 01:14 PM   #7 (permalink)
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Altima SE - '07 Nissan Altima 3.5 SE
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They had an episode of Horsepower TV on Spike that tested these plugs vs. the standard plug. To test they ran the engine on a dyno the let everything cool down and run again with the pulstar plugs. The results fuel wise was minimal but they did gain 2 hp and 1.5 lb/ft. With that being on a Chevy 350 I doubt the plugs will make any diffrence on a 4 banger.
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