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Mass Air MeterThe mass air meter is an integral part of any '89-present Ford engine and we've seen big gains in power by switching the stock meter to an aftermarket unit. Stock or mildly modified 5-liter engines work well with a 75mm Bullet or a 73mm C&L unit, while the 4.6 engines like a slightly larger meter (they come with an 80mm unit from the factory). Performance gains in the 5-15-horsepower range are common with this modification. View Related Article
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