Ford Focus Forum, Ford Focus ST Forum - View Single Post - Stock Throttle Body V.S. CFM 67MM
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Old 01-30-2013, 09:05 AM   #8
StephenElsbree1986
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No, you'd have to replace the whole intake system to see any noticeable gains. Manifold, TB, and Intake. Then you might see 2hp gain from a 67MM TB vs Stock. It isn't like a Fox Body going from a 65mm to a 105mm. Our manifold is the most restrictive part of our intake system and they even did a good job with DSM.
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