5 0 Throttle Body Test Big Deal 012
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There’s nothing trick about the fluting on the upper and lower edges of the 168mm throttle body opening. They are simply machining marks left when whittling out the oval portion of the opening. They don’t hurt airflow (as if a little less would matter), and to smooth them would require switching to a smaller cutter and more time in the CNC machine. In other words, more cost. View Related Article
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